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==Description==
==Description==
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This entry is a description of the history of the Second Life Railroad ( [[Acronyms|SLRR]] ) on the Heterocera Atoll continent.
This entry is a description of the history of the Second Life Railroad ( [[Acronyms|SLRR]] ) on the Heterocera Atoll continent.


Please use the [https://wiki.secondlife.com/wiki/Talk:Second_Life_Railroad_History Talk page] to add your comments, idea's and suggestions. Please don't add them in this text directly.
A more extended version of this article can be found at this [[Virtual_Railway_Consortium/SLRR_History|SLRR_History page]], writen and maintained by members of the Virtual Railway Consortium. That document was used as a base to create this shorten version.  
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==HISTORY==
==HISTORY==
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'''''A Brief History of the Second Life Railroad (SLRR)'''''


===2005===
===2005===
====SLRR - the origins====
The [[Second Life Railroad]] has its origins in early attempts by residents to provided automated travel around the mainland during a time when their were no direct teleports available. Some of the earliest examples - such as the "Telehopper" from Kissling and the [[GSLR|Great Second Life Railway]] from Mocha to Purple - led to the first Linden-created trolley, operating from Luna to Dore via Nova Albion. As the first mainland expanded and Magellan Linden made additional discoveries beyond the founding of Nova Albion, roadways and other Protected Land Rights of Way (ROW) were crafted on the first continent, Sansara, but none were slated for rail use.
The [[Second Life Railroad]] has its origins in early attempts by residents to provided automated travel around the mainland during a time when their were no direct teleports available. Some of the earliest examples - such as the "Telehopper" from Kissling and the [[GSLR|Great Second Life Railway]] from Mocha to Purple - led to the first Linden-created trolley, operating from Luna to Dore via Nova Albion. As the first mainland expanded and Magellan Linden made additional discoveries beyond the founding of Nova Albion, roadways and other Protected Land Rights of Way (ROW) were crafted on the first continent, Sansara, but none were slated for rail use.


With the discovery of the second Second Life continent by Magellan Linden in early 2005, the Grid saw its large-scale, Linden sponsored rail line for on the Heterocera Atoll, the Second Life Railroad (SLRR). Magellan Linden's wrecked exploration vehicle can still be seen to this day in the Columbia region, not too far from one of the earliest SLRR rail stations in Tuliptree.
Eric, Nigel, and Michael Linden created most of the track and other structures, the rolling stock, most notably, the SLRR Commuter V1.2 car.
 
Eric, Nigel, and Michael Linden created most of the track and other structures, the rolling stock, most notably, the SLRR Commuter V1.2 car and the red Alco RS-3 Locomotive, and the scripting needed to run continuous rail services for free use by all Second Life Residents.


At this time, the track formed three unconnected tracks:<BR>
At this time, the track formed three unconnected tracks:<BR>
Bhaga to Paranthrene, where the Clearwing / Paranthrene Transfer Station was located;<BR>
{{SLurl|region=Bhaga|x=108|y=34|z=29|title=Bhaga}} to Paranthrene, where the {{SLurl|region=Clearwing|x=254|y=36|z=87|title=Clearwing / Paranthrene Transfer Station|message=Clearwing / Paranthrene Transfer Station SLRR}} was located;<BR>
Clearwing to an End Of Line (EOL) in Torva;<BR>
{{SLurl|region=Clearwing|x=254|y=36|z=87|title=Clearwing / Paranthrene Transfer Station}} to an End Of Line (EOL) in {{SLurl|region=Torva|x=94|y=253|z=81|title=Torva Station|message=Torva Station SLRR}};<BR>
An EOL in Jubata around through the level grade crossing in Oculea, to the {{SLurl|region=Tuliptree|x=152|y=155|z=31|title=Tuliptree Station}}.<BR>
An EOL in {{SLurl|region=Jubata|x=195|y=239|z=81|title=Jubata Station}} to the {{SLurl|region=Tuliptree|x=152|y=155|z=31|title=Tuliptree Station}}.<BR>


The Torva-Jubata Gap was a section that appeared to be intended for designation as Protected Land ROW, but by some mishap was sold to Residents. After several years, the ROW was reacquired by Linden Lab. The gap was promptly closed.
The Torva-Jubata Gap was a section that appeared to be intended for designation as Protected Land ROW, but by some mishap was sold to Residents. (In 2009 the ROW was reacquired by Linden Lab.)


The original three tracks were provided with five Resident-created stations, all named for the region in which they are located. These stations and their creators are:
The original three tracks were provided with five Resident-created stations, all named for the region in which they are located. These stations and their creators are:


* {{SLurl|region=Achemon|x=214|y=123|z=71|title=Achemon}} - Pratyeka Muromachi
* {{SLurl|region=Achemon|x=214|y=123|z=71|title=Achemon Station}} - Pratyeka Muromachi
* {{SLurl|region=Caletta|x=185|y=179|z=31|title=Caletta}} - nimrod Yaffle
* {{SLurl|region=Calleta|x=185|y=179|z=31|title=Calleta Station}} - nimrod Yaffle
* {{SLurl|region=Neumoegen|x=107|y=142|z=66|title=Neumoegen}} - Fallingwater Cellardoor
* {{SLurl|region=Neumoegen|x=107|y=142|z=66|title=Neumoegen Station}} - Fallingwater Cellardoor
* {{SLurl|region=Obscure|x=63|y=120|z=82|title=Obscure}} - Jauani Wu
* {{SLurl|region=Obscure|x=63|y=120|z=82|title=Obscure Station}} - Jauani Wu
* {{SLurl|region=Tuliptree|x=152|y=155|z=31|title=Tuliptree}} - Sam Portacerro
* {{SLurl|region=Tuliptree|x=152|y=155|z=31|title=Tuliptree Station}} - Sam Portacerro
 
===How the original SLRR worked===
By experimentation and a few contacts with the original designers and implementers, members of the Virtual Railway Consortium (formerly the Second Life Railway Consortium) determined much of the functionality of the LL SLRR train system as created by Eric, Michael, and Nigel Linden:
 
The scripted System Controller of the SLRR is located in the Right Of Way (ROW) maps on the office wall of the ANWR prim drilling rig.
 
The invisible scripted Train Detectors placed along the SLRR ROW at various points and at each station provide two main functions - they rez a new train on command from the Controller, and they detect the passage of a train (or any scripted object in physical motion) using the llVolumeDetect function. When a 'train' is detected that information is transmitted to the Controller. As the train passes each Train Detector along the line, its passage is reported to the Controller. If the passage of a train is not reported often enough, the Controller assumes the train has been lost from the system and rezzes another unit from the Train Detector at the last reported position.
 
Trains can also be rezzed by any Linden touching a Train Detector at the end of tracks.
 
Each train can detect (by collision) a station or an End Of Line (EOL). At each station there is a scripted prim shaped like a Guide rail, though often shorter. This prim, named Buffer Stop is buried directly underneath the stations Train Detector within the Guide prims used to 'steer' the trains on the SLRR, and being scripted, triggers the SLRR train scripts to stop the train, wait 30 seconds for passengers to get on and off, then continue. Presumably, it is the script in this prim that emails reports to the System Controllers on ANWR about the arrival of a train at a station, as indicated by the data whispered in open chat there. At an EOL, a visible unscripted track structure named "Buffer Stop" triggers the SLRR train scripts to immediately reverse the direction of travel of the rolling stock and start it running back to another EOL or a transfer station.
 
The SLRR fielded two makes of rolling stock: The train seen most recently (Eric Linden's sleek SLRR Commuter v1.2), or 'Blue Train', ran quite well under Havok 1, but as scripted, travels too fast to hold the track under Havok 4 - it rezzes attempting to run at 16 meters per second. The powerful red Alco RS-3 locomotive created by Michael Linden also ran the road around the Atoll very well under Havok 1. Its operation under the original SLRR scripts was also observed during testing the SLRR system, and it also was trying to run too fast for H4.
 
Originally, the SLRR was divided into three control segments, SLRR Control North, SLRR Control South, and SLRR Control East. One break, between the East and the North segments is at the Clearwing/Paranthrene Transfer Station. For years, a break existed between the North and South tracks from the EOL at the Jubata station through Sinica to the EOL in Torva. (See 2009)
 
When the system was running, the active control segments were denoted by colored LEDs on the Controller. On the South segment, passages of trains through each Train Detector and stops at stations were tracked on one section by smaller LEDs displaying the train's location.
 
Near the System Controller, messages from each active train reporting 'last seen at' and 'arrival at', with region and coordinates, station name if any, rolling stock name, and travel times could be heard whispered in open chat.
 
The SLRR rolling stock ran as physical objects, 'steered' over the tracks by an invisible non-physical prim named Guide that the trains repeatedly collided with, thereby being directed back onto the correct course.
 
Since this Guide was 0.5 x 0.5 meters in cross-section, and was placed with its bottom face up to 0.20 meters above the trackbed prims, it represented a serious obstacle to the smooth operation of automobiles or other such traffic at level grade crossings. In Oculea, the first such crossing, a system was implemented to smooth the passage of non-rail traffic though the crossing. The Guide prims were set to Phantom state until the crossing control scripts sensed on the tracks the approach of any train (or other moving object) with "SLRR" in its name. Upon the detection of such an object, the crossing scripts set the Guide prims to Nonphysical state until the train was sensed having cleared the crossing, after which the Guides were set back to Phantom.
 
A method of triggering the system into resuming train rezzing was proposed and verified during investigations into the operation of the system.
 
The old SLRR system is currently disabled, so no Linden trains are now running.


The open source GSLR script from the Rail Rally 2008 Resource Kits collection appears to work very similarly to the way the SLRR scripts were observed to operate. This script provides a good starting point for physical train building, and several Residents have used it successfully. These kits are available free at the VRC headquarters across from Tuliptree Station.
By experimentation and a few contacts with the original designers and implementers, members of the Second Life Railway Consortium (later renamed to the Virtual Railway Consortium) determined much of the functionality of the LL SLRR automated train system as created by Eric, Michael, and Nigel Linden. The scripted System Controller of the SLRR is located in the Right Of Way (ROW) maps on the office wall of the {{SLurl|region=ANWR|x=105|y=171|z=40|title=ANWR prim drilling rig}}.  The SLRR Commuter V1.2 car ran as physical objects, 'steered' over the tracks by an invisible non-physical prim named Guide that the trains repeatedly collided with, thereby being directed back onto the correct course.


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===2006===
===2006===
====Resident Station Build Contest====
In September of 2006, Nigel Linden [http://blogs.secondlife.com/community/features/blog/2006/10/10/second-life-railroad-stations--resident-construction-bids announced a contest] for Residents to design and build ten more SLRR stations, winning L$ prizes for their efforts, and completing the final builds by October 31st. From the 103 entries, the [http://blogs.secondlife.com/community/features/blog/2006/10/25/slrr-station-build-bid--results winning builders] were:
In September of 2006, Nigel Linden announced a contest for Residents to design and build ten more SLRR stations, winning L$ prizes for their efforts, and completing the final builds by October 31st. From the 103 entries, the ten winning builders were:


* Bhaga - Alazarin Mondrian
* {{SLurl|region=Bhaga|x=108|y=34|z=29|title=Bhaga Station}} - Alazarin Mondrian
* Tenera - Shawk Pertwee
* {{SLurl|region=Tenera|x=196|y=139|z=84|title=Tenera Station}} - Shawk Pertwee
* Aglia - Elliot Eldrich
* {{SLurl|region=Aglia|x=144|y=151|z=84|title=Aglia Station}} - Elliot Eldrich
* Crenulate - Donk Kongo
* {{SLurl|region=Crenulate|x=150|y=26|z=86|title=Crenulate Station}} - Donk Kongo
* Clearwing/Paranthrene - Ralph Doctorow
* {{SLurl|region=Clearwing|x=254|y=36|z=87|title=Clearwing Station}} - Ralph Doctorow
* Foxglove - Midtown Bienenstrich
* {{SLurl|region=Foxglove|x=151|y=227|z=91|title=Foxglove Station}} - Midtown Bienenstrich
* Lunalis - Lunalis SLRR Committee
* {{SLurl|region=Lunalis|x=26|y=76|z=91|title=Lunalis Station}} - Lunalis SLRR Committee
* Spini - Mordecai Nitschke
* {{SLurl|region=Spini|x=102|y=18|z=81|title=Spini Station}} - Mordecai Nitschke
* Jubata - Ilianexsi Sojourner
* {{SLurl|region=Jubata|x=195|y=239|z=81|title=Jubata Station}} - Ilianexsi Sojourner
* Epirrhoe - Ledje Gorky
* {{SLurl|region=Epirrhoe|x=171|y=225|z=81|title=Epirrhoe Station}} - Ledje Gorky
* Zale - Byron Curtis  
* {{SLurl|region=Zale|x=73|y=200|z=30|title=Zale Station}} - Byron Curtis  


These and other stations on the SLRR lines continued to be regularly served by the SLRR Commuter V1.2 car throughout 2006.
These and other stations on the SLRR lines continued to be regularly served by the SLRR Commuter V1.2 car throughout 2006.
Line 113: Line 50:


===2007===
===2007===
====Renewed Rail Interest====
In November, Michael Linden built the {{SLurl|region=Vicina|x=133|y=70|z=31|title=Vicina Quay}}, a large dock with a freighter ship floating nearby. A new SLRR-gauge track was laid connecting the Quay with Crumbi, creating the original Crumbi junction.
In 2007 a Resident developed a sensor-guided trolley for use on the GSLR Calleta EOL to Cecropia Ocean Terminal. Testing the unit on the SLRR, the developer repeatedly met other Residents interested in rail, and this led to the formation of the Second Life Railway Consortium and the subsequent two-region Rail Rally 2008, the first major rail event in SL and the largest ever in land area, number of rail builds, and number and variety of events. (See 2008)
 
There were other rail groups already in existence, but most seemed dormant. Since the Rail Rally, rail-oriented group numbers and memberships have been steadily growing, with visible increases in Resident talk about, usage, and creation of rail content.
 
During 2007, Residents repeatedly asked in forums and filed in Jira about the now missing SLRR automated trains services, stating that they had valued the rail resource and asking that it be reinstated.
 
====Vicina Quay and track====
In November, Michael Linden built the Vicina Quay and a freighter floating a few meters away. A new track was laid connecting the Quay with the planned Crumbi Transfer Station. This junction was later reconfigured, eliminating the need for transfers and integrating the Vicina track into the rest of SLRR. (See 2010)


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===2008===
===2008===
====Havok Upgrade====
On 1 April 2008, the Havok version 1 physics engine in SL was updated to Havok 4 gridwide. Changes in Havok itself, its interface with the LL simulator code, in the system tunings, and vehicle code of the upgrade caused the failure of most physical trains in SL, including the Commuter V1.2. Gradually, rolling stock creators began to make adjustment to their builds and scripts to accommodate the new operating conditions.
On 1 April 2008, the Havok version 1 physics engine in SL was updated to Havok 4 gridwide. Changes in Havok itself, its interface with the LL simulator code, in the system tunings, and vehicle code of the upgrade caused the failure of most physical trains in SL, including the Commuter V1.2 which, at times, had been running on all three SLRR tracks as well as the venerable Nova Albion trolley. Gradually, rolling stock creators began to make adjustment to their builds and scripts to accommodate the new operating conditions.


The LDPW contracted a Mole to work on the SLRR system. This development resulted in a successful test on 31 December 2008 of new SLRR rolling stock scripts in two green Alco RS-3 locomotives created by Michael Linden, with a Mole engineer on one unit, and Michael Linden operating the other. Both locomotives had multiple Residents and Lindens aboard, and completed a full traverse of the three tracks then in place on the SLRR, starting out at Tuliptree Station and pulling into the Bhaga Station at the other end. One of the units made the return trip with the Mole operating it and several Residents aboard.
Linden Lab disabled the Commuter V1.2 automated train system Service.


====Bay City SLRR Spur====
The LDPW contracted a Mole to work on the SLRR system. This development resulted in a test on 31 December 2008 of new SLRR rolling stock scripts in two green Alco RS-3 locomotives created by Michael Linden. Two of these locomotives ran the entire Atoll route and back carrying multiple Residents and Lindens on each unit, running at speeds up to 14 meters per second. This locomotive was not placed into automated service, but has subsequently been used for testing physical train operation on the SLRR.
Additional rails were added to the Bay City mainland area. While many of them were essentially decorative, and for use on a non-physical trolley system down Route 66 in Bay City, some were planned for future SLRR expansion. A Bay City station was also constructed by Squishy Mole of the LDPW in Inner Harbor, but left unfinished at the opening of the Bay City area. It served only as a place to house the city's content package for Residents. Late in 2008, additional rails were laid from Grub Beach to Manyiminya in the Bay City area.


====Rail Rally 2008====
Over a period of two months, Rail Rally 2008 was hosted in two mainland regions - Schizura and Vicina.  Sponsored by the Second Life Railway consortium, the Rally included two three day sessions and multiple events in the interim. The Rally brought together rail builders, scripters, merchants, train-spotting and -riding buffs, and a mix of Residents with rail and other transportation interests.  The venue hosted an SLRR-gauge two region track loop with working signals and moving bridges.  
Over a period of two months, Rail Rally 2008 was hosted in two mainland regios - Schizura and Vicina.


Sponsored by the Second Life Railway consortium, the Rally included two three day sessions and multiple events in the interim. The Rally brought together rail builders, scripters, merchants, train-spotting and -riding buffs, and a mix of Residents with rail and other transportation interests.
There was a growing personal train industry in Second Life, with many builders and several very different approaches to train building. LL considered changing SLRR's solid center rail to a phantom type that would permit both physical and non-physical rolling stock to use the SLRR, though a change from 'collision' to sensor-guided steering would have been required. A very few Residents fought this effort and the SLRR's solid center rail was retained as a part of the SLRR's track standard.  Changes to SL simulator code have since rendered most physical rolling stock unable to operate on the SLRR.


The overall program was family friendly and included a Toy Steam Train, a fishing game, paddleboats, canoes & kayaks, and a hidden maze under the malls.
Rails were added to the Bay City mainland area, though they departed from the previous SLRR construction, using phantom Guide instead of non-physical. This removed several issues such as creating stumbling blocks for pedestrians and roadblocks for automotive traffic and allows sensor-guided rolling stock, whether physical or non-physical, to run on this track. Many of them are used on a non-physical trolley system down Route 66 in Bay City. A Bay City station was also constructed by Squishy Mole of the LDPW in {{SLurl|region=Inner Harbor|x=10|y=33|z=26|title=Inner Harbor}}, but left unfinished at the opening of the Bay City area. It served only as a place to house the city's content package for Residents. Late in 2008, additional rails were laid from Grub Beach to {{SLurl|region=Manyiminya|x=24|y=25|z=25|title=Manyiminya}}in the Bay City area.
 
The venue hosted an SLRR-gauge two region track loop with working signals and moving bridges, with a stretch of the loop running alongside the SLRR.
 
Also part of the program were beautiful full-sized train displays, running trains to watch and ride, field trips to railways and rail builds in SL, Chatterboxes offering rail history and quotes, free information about all known rail activity in SL, free rail building and scripting resources, a rail scripting debugging session with Andrew and Simon Linden, time trials for Resident-created rolling stock, and the RAILS indie rock band.
 
To advertise the Rally, interactive posterboards were developed and given to any resident wishing to display them. The posterboards gave touchers an updateable notecard on Rally plans and results. Many of these posterboards are still seen around the grid and regularly serve notecards to interested Residents.
 
====Resident-Created Trains====
In 2008 and continuing up to the present, Resident-created trains have steadily increased in variety and number. A few commercial offerings appeared, but equally visible on the SLRR are the many different builds using free open source scripts available from several sources.


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===2009===
===2009===
====Closing the Gap====
By 2009 there was a thriving personal railroading industry in Second Life with a dozen or more active train builders. LL opted to forgo restoration of automated train service on their Right Of Way, encouraging use of the SLRR by Residents and continued development of the SLRR in a multi-use approach on the SLRR Atoll tracks.
Early in 2009, the Resident-owned land in Sinica where the SLRR should have been running since its inception was acquired, track was laid, and the Torva-Jubata Gap was closed. Around the same time, a passing track in Sinica, between Torva and Jubata, was laid in preparation for heavier, bi-directional traffic on the SLRR.
 
====New passing tracks====
In early 2009, a passing track was laid in Lunalis and Fucosa, and slightly later, the Sinica passing track mentioned above.
Switching development
Beginning in late 2009 Sylvan Mole began the development of active switches for the SLRR. Multiple configurations have been tested to ensure compatibility with the widest possible range of existing Resident rolling stock designs. A switch design testbed was constructed in Tussock to allow Residents to verify proper operation of their rolling stock through the proposed switches.


====Crumbi reconfiguration====
Early in 2009, the Resident-owned land in {{SLurl|region=Sinica|x=85|y=117|z=81|title=Sinica}} where the SLRR should have been running since its inception was acquired, track was laid, and the Torva-Jubata Gap was closed.
Beginning in late 2009 the track alignment near the Crumbi Transfer Station was modified, track was added, and switches were begun to directly connect the Vicina track to the SLRR. The station was renamed to Crumbi Junction, reflecting the new track configuration.


====New Track====
Around the same time, a passing track in Sinica, between Torva and Jubata, was laid, a passing track was laid in {{SLurl|region=Lunalis|x=119|y=168|z=90|title=Lunalis}} and {{SLurl|region=Fucosa|x=128|y=128|z=126|title=Fucosa Passing track}}, and slightly later, the {{SLurl|region=Sinica|x=82|y=96|z=80|title=Sinica Passing track}} passing track mentioned above.
In 2009, continuing into 2010, new tracks were added to the SLRR, all of which were directly integrated with planned switches.


In the Crumbi Reconfiguration, a bridging track was added in Tenera to enable routing from that track over to the track heading out through Webworm.
In late 2009 Sylvan Mole began the development of active switches for the SLRR. Multiple configurations have been tested to ensure compatibility with the widest possible range of existing Resident rolling stock designs. A {{SLurl|region=Tussock|x=128|y=38|z=120|title=switch design testbed}} was constructed in Tussock.


In Pawpaw, another bridging track was laid to enable routing between the branch heading from Pawpaw to the Pavonia EOL, and the other from Pawpaw toward Tussock Junction.
On October 1st 2009 the SLRR Rail Group organized Rail Fest 2009. About 30 trains started at {{SLurl|region=Tuliptree|x=152|y=155|z=31|title=Tuliptree Station}} and ran the entire Heterocera main line all the way to {{SLurl|region=Bhaga|x=108|y=34|z=29|title=Bhaga}}. The after-party was held at Dougie Flossbergs railroad build in Yui Bon.


An extension from the workyard in Tussock extended the SLRR up to Spangle. The workyard was shut down, but a siding in Spangle provides facilities to sideline a unit for servicing or repair.
In late 2009 the track alignment near the Crumbi Transfer Station was modified. A bridging track was added in {{SLurl|region=Tenera|x=235|y=194|z=80|title=Tenera}} to enable routing from that track over to the track heading out through Webworm.
 
Track in inner Harbor to Manyiminya in Bay City received a guide rail and buffer stops, and became a test rail for switches and crossings late in the year.


In Pawpaw, another {{SLurl|region=Pawpaw|x=143|y=117|z=120|title=bridging track}} was laid to enable routing between the branch heading from Pawpaw to the {{SLurl|region=Pavonia|x=52|y=115|z=128|title=Pavonia End of the Line}}, and the other from Pawpaw toward Tussock Junction.
A trackbed extension from Tussock extended the SLRR up to Spangle. No center rail was installed, however, and some residents encouraged the correction of that omission.
Track in {{SLurl|region=Inner Harbor|x=10|y=33|z=26|title=inner Harbor}} to {{SLurl|region=Manyiminya|x=24|y=25|z=25|title=Manyiminya}} in Bay City received a guide rail and buffer stops, and became a test rail for switches and crossings.
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===2010===
===2010===
====VRC Member Cooperation====
Several residents began providing automated train and ferry services around the SLRR, as well as giving out free trains and providing the ability to ride a train "on demand."  The VRC began distributing a free open-source VRC Hobo Train to the public.
Several VRC members bought land and made swaps with LL to enable:


Expanding SLRR ROW at Pawpaw, adding that station and bridging track.
VRC members bought land and made swaps with LL to enable:
Completing the LL ROW to a large Linden land area in Pyri.
{{SLurl|region=Pawpaw|x=99|y=132|z=118|title=Expanding SLRR ROW at Pawpaw}}, adding that station and bridging track. Completing the LL ROW to a large Linden land area in {{SLurl|region=Pyri|x=132|y=117|z=115|title=Pyri}}.


Several Residents began providing automated train services on various stretches of the SLRR so Residents cold ride and enjoy the scenery without having to buy or even operate any rolling stock.
Michael Linden reconfigured the {{SLurl|region=Clearwing|x=254|y=36|z=87|title=Clearwing/Paranthrene Transfer Station}} with the now-connected tracks passing on either side of the the station. Another passing track was laid in {{SLurl|region=Triphosa|x=240|y=153|z=31|title=Triphosa}}, and a siding in Spangle. Several [http://blogs.secondlife.com/community/land/dpw/blog/2009/12/17/railway-infrastructure-suggestions new stations] and a railyard were also built by the LDPW:
* {{SLurl|region=Crumbi|x=28|y=206|z=75|title=Crumbi Junction station}} - Hyper Mole
* {{SLurl|region=Dubia|x=74|y=234|z=61|title=Dubia Station}} - Crafty Mole
* {{SLurl|region=Leafroller|x=204|y=14|z=119|title=Leafroller Station}} - Abnor Mole
* {{SLurl|region=Melanthia|x=102|y=21|z=31|title=Melanthia Station}} - Myopic Mole
* {{SLurl|region=Pawpaw|x=143|y=117|z=120|title=Pawpaw Station}} - Glamorous Mole
* {{SLurl|region=Spangle|x=161|y=239|z=33|title=Spangle Station}} - Garden Mole
* {{SLurl|region=Tussock|x=65|y=157|z=119|title=Tussock Rail Yard}} - Sylvan Mole


Hobo Junction became affiliated with the VRC and began offering a travel Service with descriptions and LMs
The LDPW began accepting requests for private resident rail connections to the SLRR, with connecting track being placed on a case-by-case basis. Several of these connections have been installed.


====SLRR Wiki Pages====
Road-grade crossing gate systems were installed at {{SLurl|region=Mocis|x=83|y=110|z=32|title=Mocis crossing}}, {{SLurl|region=Cisthene|x=98|y=98|z=32|title=Cisthene crossing}} and {{SLurl|region=Oculea|x=245|y=36|z=32|title=Oculea crossing}} as part of the LDPW signal and switch project by Sylvan Mole.
At the start of the year new Wiki pages were set up for the SLRR. Michael Linden confirmed the names for the new and existing branch lines on the SLRR:
Branching off the Main Line from Crumbi to Vicina is the Maritime Branch; From Crumbi via Pawpaw to Crenulate is the Mountain Branch; From Pawpaw up the Nothern coast of the Heterocera Atoll is the North Coast Branch.


====Clearwing/Paranthrene transfer reconfiguration====
The LDPW began building and placing new control signals signals on the SLRR. Several different designs have been fielded.
In early 2010 Michael Linden began the realignment of SLRR tracks at the border of Clearwing and Paranthrene regions. The transfer station there was slightly relocated and became a line station, with the now-connected tracks passing on either side of the the station. With the addition of active switches, these tracks will provide a passing loop to ease bidirectional travel on the SLRR.
New passing track & siding
In early 2010, a passing track was laid in Triphosa, and a siding in Spangle at the time the branch track was laid.


====Resident interconnections====
On August 15th the SLRR Rail Group held RAIL JAM 2010. Over 45 trains were counted along a route that took the participants from {{SLurl|region=Bhaga|x=108|y=34|z=28|title=Bhaga Station}} to {{SLurl|region=Calleta|x=185|y=179|z=30|title=Calleta "Hobo" Station}}.  The event ended with a gathering at the Loco Motives track in XL City.
The LL Maintenance group began accepting requests for Resident interconnection to the SLRR, with connecting track being placed on a case-by-case basis. Actual switching mechanisms will be placed after the  
final design has been validated.


====Signals====
A test track in {{SLurl|region=Bhaga|x=108|y=34|z=28|title=Fuchsia}} was been build to show the switches and signals that where produced by {{User2|Sylvan Mole}}.
The LDPW began building and placing new signals for a signal and switching system under development. Several different designs have been fielded, and are used to set switch routings as well as indicate current status of the switches.


====LDPW-built Stations====
{{User2|Michael Linden}}, from the Linden Department of Public Works, organized a [http://blogs.secondlife.com/community/land/dpw/blog/2010/08/16/railway-brown-bag Railway Brown Bag] meeting to discuss the future of the SLRR and the standards of track, switches and signals. This took place on August 18th 2010.  Several standards were discussed and later adopted, as documented in the SLRR Standards pages in this wiki.<BR>
In 2010, several new stations and a railyard were built by the LDPW on existing and new track:


* Crumbi Junction - Hyper Mole
==Source==
* Dubia Station - Crafty Mole
The above information was compiled by multiple SL Residents, some by interview with current and past Lindens.
* Leafroller Station - Abnor Mole
* Melanthia Station - Myopic Mole
* Pawpaw Junction - Glamorous Mole
* Spangle Station - Garden Mole
* Tussock Railyard - Sylvan Mole
* Malacosoma Crossover - Michael Linden
 
====Resident Stations====
In 2010, the list of existing Resident-built stations grew with several additions. Some of these are:
 
* VRC Achemon Trainspotting Gallery - Jorge Serapis
* VRC Athetis Station - Stryker Jenkins
* Celerio Station (since 2008) - Carrie Talaj
* VRC HQ Pavilion - Marianne McCann and Stryker Jenkins
* Imperial Station - ujiyasu Handrick
* VRC Malacasoma Station - Stryker Jenkins
* Peppermint Station - (now gone)
* VRC Pini Yard - Stryker Jenkins
 
====Mocis level grade crossing====
One of Three new level grade crossing to appear on the SLRR since its inception, the Mocis crossing is part of the LDPW signal and switch project in progress. Sylvan Mole is developing a system to operate active structures ion the SLRR, and the Mocis crossing is a testbed for part of that work.
 
----
 
===More to come===
The recorded history currently ends at July 2010. If and when significant addition to the SLRR are noted we will add them here.


</div></div>
==References==


<div id="box">
Here is a list of Related resources. You can find more information about the SLRR and other Rail related articles on these wiki pages and external websites.


==Source==
Wiki pages:
<div style="padding:0.5em">
* [[Second_Life_Railroad]] (main page)
The above information was initially collected by members of the Virtual Railway Consortium {{SLurl2|http://slurl.com/secondlife/Tuliptree/107/131/30}} with the help of {{User2|Stryker Jenkins}}, {{User2|Moundsa Mayo}}. {{User2|Qie Niangao}}.
* [[Second_Life_Railroad/SLRR_History|SLRR History]]
</div></div>
* [[Second_Life_Railroad/SLRR_standards|SLRR Standards]]
* [[Second_Life_Railroad/SLRR Switch|SLRR Switch]]


<div id="box">
* [[LDPW|Linden Department of Public Works]]
* [[Linden_Vehicle_Tutorial]]
* [[Virtual_Railway_Consortium]]
* [[Virtual_Railway_Consortium/SLRR_History]]
* [[Virtual_Railway_Consortium/SLRR_Stations]]


==Also See==
External information:
<div style="padding:0.5em">
* [http://en.wikipedia.org/wiki/Rail_gauge Wikipedia: Rail gauge]
* [[Second_Life_Railroad]]
* [http://lslwiki.net/lslwiki/wakka.php?wakka=physics Physics related LSL on LSLwiki.net]
* [[Second_Life_Railroad/SLRR_standards|SLRR standards]]
* [http://lslwiki.net/lslwiki/wakka.php?wakka=vehicles Vehicle related LSL on LSLwiki.net]
* [[Second Life Railroad/SLRR Switch concept|SLRR Switch concept]]
* [http://www.virtualrailwayconsortium.org/ Virtual Railway Consortium]
* [http://www.virtualrailwayconsortium.org/ Virtual Railway Consortium]
</div></div>


[[Category:LDPW]]
[[Category:SL_Railroad]]
[[Category:Culture]]
[[Category:History]]

Latest revision as of 03:54, 11 May 2015

Description

This entry is a description of the history of the Second Life Railroad ( SLRR ) on the Heterocera Atoll continent.

A more extended version of this article can be found at this SLRR_History page, writen and maintained by members of the Virtual Railway Consortium. That document was used as a base to create this shorten version.

HISTORY

2005

The Second Life Railroad has its origins in early attempts by residents to provided automated travel around the mainland during a time when their were no direct teleports available. Some of the earliest examples - such as the "Telehopper" from Kissling and the Great Second Life Railway from Mocha to Purple - led to the first Linden-created trolley, operating from Luna to Dore via Nova Albion. As the first mainland expanded and Magellan Linden made additional discoveries beyond the founding of Nova Albion, roadways and other Protected Land Rights of Way (ROW) were crafted on the first continent, Sansara, but none were slated for rail use.

Eric, Nigel, and Michael Linden created most of the track and other structures, the rolling stock, most notably, the SLRR Commuter V1.2 car.

At this time, the track formed three unconnected tracks:
Bhaga🖈 to Paranthrene, where the Clearwing / Paranthrene Transfer Station🖈 was located;
Clearwing / Paranthrene Transfer Station🖈 to an End Of Line (EOL) in Torva Station🖈;
An EOL in Jubata Station🖈 to the Tuliptree Station🖈.

The Torva-Jubata Gap was a section that appeared to be intended for designation as Protected Land ROW, but by some mishap was sold to Residents. (In 2009 the ROW was reacquired by Linden Lab.)

The original three tracks were provided with five Resident-created stations, all named for the region in which they are located. These stations and their creators are:

By experimentation and a few contacts with the original designers and implementers, members of the Second Life Railway Consortium (later renamed to the Virtual Railway Consortium) determined much of the functionality of the LL SLRR automated train system as created by Eric, Michael, and Nigel Linden. The scripted System Controller of the SLRR is located in the Right Of Way (ROW) maps on the office wall of the ANWR prim drilling rig🖈. The SLRR Commuter V1.2 car ran as physical objects, 'steered' over the tracks by an invisible non-physical prim named Guide that the trains repeatedly collided with, thereby being directed back onto the correct course.

2006

In September of 2006, Nigel Linden announced a contest for Residents to design and build ten more SLRR stations, winning L$ prizes for their efforts, and completing the final builds by October 31st. From the 103 entries, the winning builders were:

These and other stations on the SLRR lines continued to be regularly served by the SLRR Commuter V1.2 car throughout 2006.

2007

In November, Michael Linden built the Vicina Quay🖈, a large dock with a freighter ship floating nearby. A new SLRR-gauge track was laid connecting the Quay with Crumbi, creating the original Crumbi junction.

2008

On 1 April 2008, the Havok version 1 physics engine in SL was updated to Havok 4 gridwide. Changes in Havok itself, its interface with the LL simulator code, in the system tunings, and vehicle code of the upgrade caused the failure of most physical trains in SL, including the Commuter V1.2. Gradually, rolling stock creators began to make adjustment to their builds and scripts to accommodate the new operating conditions.

Linden Lab disabled the Commuter V1.2 automated train system Service.

The LDPW contracted a Mole to work on the SLRR system. This development resulted in a test on 31 December 2008 of new SLRR rolling stock scripts in two green Alco RS-3 locomotives created by Michael Linden. Two of these locomotives ran the entire Atoll route and back carrying multiple Residents and Lindens on each unit, running at speeds up to 14 meters per second. This locomotive was not placed into automated service, but has subsequently been used for testing physical train operation on the SLRR.

Over a period of two months, Rail Rally 2008 was hosted in two mainland regions - Schizura and Vicina. Sponsored by the Second Life Railway consortium, the Rally included two three day sessions and multiple events in the interim. The Rally brought together rail builders, scripters, merchants, train-spotting and -riding buffs, and a mix of Residents with rail and other transportation interests. The venue hosted an SLRR-gauge two region track loop with working signals and moving bridges.

There was a growing personal train industry in Second Life, with many builders and several very different approaches to train building. LL considered changing SLRR's solid center rail to a phantom type that would permit both physical and non-physical rolling stock to use the SLRR, though a change from 'collision' to sensor-guided steering would have been required. A very few Residents fought this effort and the SLRR's solid center rail was retained as a part of the SLRR's track standard. Changes to SL simulator code have since rendered most physical rolling stock unable to operate on the SLRR.

Rails were added to the Bay City mainland area, though they departed from the previous SLRR construction, using phantom Guide instead of non-physical. This removed several issues such as creating stumbling blocks for pedestrians and roadblocks for automotive traffic and allows sensor-guided rolling stock, whether physical or non-physical, to run on this track. Many of them are used on a non-physical trolley system down Route 66 in Bay City. A Bay City station was also constructed by Squishy Mole of the LDPW in Inner Harbor🖈, but left unfinished at the opening of the Bay City area. It served only as a place to house the city's content package for Residents. Late in 2008, additional rails were laid from Grub Beach to Manyiminya🖈in the Bay City area.

2009

By 2009 there was a thriving personal railroading industry in Second Life with a dozen or more active train builders. LL opted to forgo restoration of automated train service on their Right Of Way, encouraging use of the SLRR by Residents and continued development of the SLRR in a multi-use approach on the SLRR Atoll tracks.

Early in 2009, the Resident-owned land in Sinica🖈 where the SLRR should have been running since its inception was acquired, track was laid, and the Torva-Jubata Gap was closed.

Around the same time, a passing track in Sinica, between Torva and Jubata, was laid, a passing track was laid in Lunalis🖈 and Fucosa Passing track🖈, and slightly later, the Sinica Passing track🖈 passing track mentioned above.

In late 2009 Sylvan Mole began the development of active switches for the SLRR. Multiple configurations have been tested to ensure compatibility with the widest possible range of existing Resident rolling stock designs. A switch design testbed🖈 was constructed in Tussock.

On October 1st 2009 the SLRR Rail Group organized Rail Fest 2009. About 30 trains started at Tuliptree Station🖈 and ran the entire Heterocera main line all the way to Bhaga🖈. The after-party was held at Dougie Flossbergs railroad build in Yui Bon.

In late 2009 the track alignment near the Crumbi Transfer Station was modified. A bridging track was added in Tenera🖈 to enable routing from that track over to the track heading out through Webworm.

In Pawpaw, another bridging track🖈 was laid to enable routing between the branch heading from Pawpaw to the Pavonia End of the Line🖈, and the other from Pawpaw toward Tussock Junction. A trackbed extension from Tussock extended the SLRR up to Spangle. No center rail was installed, however, and some residents encouraged the correction of that omission. Track in inner Harbor🖈 to Manyiminya🖈 in Bay City received a guide rail and buffer stops, and became a test rail for switches and crossings.

2010

Several residents began providing automated train and ferry services around the SLRR, as well as giving out free trains and providing the ability to ride a train "on demand." The VRC began distributing a free open-source VRC Hobo Train to the public.

VRC members bought land and made swaps with LL to enable: Expanding SLRR ROW at Pawpaw🖈, adding that station and bridging track. Completing the LL ROW to a large Linden land area in Pyri🖈.

Michael Linden reconfigured the Clearwing/Paranthrene Transfer Station🖈 with the now-connected tracks passing on either side of the the station. Another passing track was laid in Triphosa🖈, and a siding in Spangle. Several new stations and a railyard were also built by the LDPW:

The LDPW began accepting requests for private resident rail connections to the SLRR, with connecting track being placed on a case-by-case basis. Several of these connections have been installed.

Road-grade crossing gate systems were installed at Mocis crossing🖈, Cisthene crossing🖈 and Oculea crossing🖈 as part of the LDPW signal and switch project by Sylvan Mole.

The LDPW began building and placing new control signals signals on the SLRR. Several different designs have been fielded.

On August 15th the SLRR Rail Group held RAIL JAM 2010. Over 45 trains were counted along a route that took the participants from Bhaga Station🖈 to Calleta "Hobo" Station🖈. The event ended with a gathering at the Loco Motives track in XL City.

A test track in Fuchsia🖈 was been build to show the switches and signals that where produced by Sylvan Mole.

Michael Linden, from the Linden Department of Public Works, organized a Railway Brown Bag meeting to discuss the future of the SLRR and the standards of track, switches and signals. This took place on August 18th 2010. Several standards were discussed and later adopted, as documented in the SLRR Standards pages in this wiki.

Source

The above information was compiled by multiple SL Residents, some by interview with current and past Lindens.

References

Here is a list of Related resources. You can find more information about the SLRR and other Rail related articles on these wiki pages and external websites.

Wiki pages:

External information:

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