Summary: Most people are still asking the question of why the province decided to suddenly switch the Evergreen Line to SkyTrain technology in 2008. I think we should be asking questions about why the LRT design process suddenly stopped, with no reason, back in 2007.
The Evergreen Line is now slated to open in 2017, which just happens to be yet another delay in a consecutive series. Nobody likes delays, and these Evergreen Line delays have injected a new wave of doubt among transit observers here in Metro Vancouver, who may remember a time not too long ago when the Evergreen Line was comparable to a hot potato. That is, hardly anyone could come to an agreement about it.
During the late 2000s, what is now the Evergreen Line had to go through numerous obstacles, ranging from funding shortages to planning issues to a lack of clarity in the political commitment to the line itself. The Evergreen Line was first proposed as the second phase of what became the Millennium Line SkyTrain, cancelled along with a switch in government, and then brought back to life later on as an at-grade Light Rail Transit proposal on the original alignment.
However, perhaps one of the most perplexing twists in the Evergreen Line story was the controversial change from an at-grade Light Rail Transit system, to the currently-being built extension of the existing SkyTrain system. It took people by surprise, changed the focus of the discussion and was so significant that it caught the attention of transit bloggers in other Canadian cities.
The move was controversial because of the creation of a new business case released by the provincial government (hereafter referred to as the “2008 business case”) that overrode a previous business case released by TransLink (the “2006 business case”) for the Evergreen Line LRT. A following, final business case by the province (the “2010 business case”) adopted the results of the 2008 business case without making major changes to it, or addressing its supposed issues.
The 2008 business case explained that its recommendation for SkyTrain (ALRT) on the current corridor was based on 4 key findings:
- Ridership – ALRT will produce two and a half times the ridership of Light Rail Transit (LRT) technology; this is consistent with the ridership goals in the Provincial Transit Plan.
- Travel Time – ALRT will move people almost twice as fast as LRT (in the NW corridor).
- Benefits and Cost – ALRT will achieve greater ridership and improved travel times at a capital cost of $1.4 billion, with overall benefit-cost ratio that favour ALRT over LRT.
- System Integration – ALRT will integrate into TransLink’s existing SkyTrain system more efficiently than LRT.
The new business case recommended SkyTrain based on finding advantages in 4 key areas: Ridership; Travel Time; Benefits and Cost; and System Integration.
Light Rail advocates who looked into the study insisted that the new analysis was biased in favour of SkyTrain, saying it rejected what was an already-sound business case. Some of these people alleged that the switch was a result of insider connections, shady agreements, and other under-the-radar proceedings. 2008 was a time when it wasn’t as clear to people that SkyTrain isn’t a proprietary transit technology and it was probably no surprise that critics of the decision showed up in waves.
These critics were joined by others, including City Councils of the time, who expressed concern about some aspects of the newer business case. Two particular major players come into mind:
1. The City of Burnaby released a staff report that injected doubt into the Evergreen Line’s cost estimates, ridership estimates and evaluation. (See [HERE] for report)
“This report recommends that the Province and TransLink undertake to re-evaluate the choice of technology and prepare a business case of LRT technology for the Evergreen Line based on the concerns and questions raised in this report with regard to service speed, ridership estimates, operating and capital costs, inter-operability, community service and other factors.”
2. A Portland-based transportation engineer named Gerald Fox alleged that the analysis had been manipulated to favour SkyTrain. (The original letter was posted [HERE]).
“It is interesting how TransLink has used this cunning method of manipulating analysis to justify SkyTrain in corridor after corridor, and has thus succeeded in keeping its proprietary rail system expanding.”
At the time, no one could present an argument strong enough to combat what seemed to be a legitimate series of concerns on the SkyTrain proposal. The decisions of 2008 and the surrounding controversy continue to be reflected in the words of today’s writers, most recently surfacing with the announcement of the recent Evergreen Line delay and the ongoing SkyTrain versus LRT debate in Surrey.
It is, however, important to remember that when the Auditor General of British Columbia was asked to look into the Evergreen Line technology switch, the finished report in 2013 concluded that while some information was missing, the switch to SkyTrain was the right decision.
The Auditor General summarized the missing information as a shortfall in explaining the following:
- Options’ risks, costs and benefits;
- Assumptions underpinning SkyTrain ridership;
- Wider transit system risks and dependencies; and
- How agencies would measure performance
In the approximately 3 years since this Audit was released and the 7 years since the decision to switch to SkyTrain, new information has been released that makes it possible to fill in all four of these gaps, as well as the other concerns raised by critics and the City of Burnaby.
In an effort to compile this new information, I performed the research myself, which included extensively looking into all business cases (2006, 2008 and 2010) and other supporting evidence (including all 61 archived pages of the original Evergreen Line LRT discussion thread on Skyscraperpage).
With my conclusion that the Evergreen Line business case was not manipulated to favour SkyTrain, I present my results below.
1. Were SkyTrain and LRT compared properly?
The first and foremost concern by the auditor general was that the SkyTrain and LRT options may not have been compared properly, citing that numerous numbers in the comparison were skewed and contained significantly shortfalls.
The City of Burnaby’s staff report probably best summarized the issues that were raised surrounding the comparison. They are:
Capital cost estimates
As the capital cost estimates for LRT increased from $970 million (2006 business case) to $1.25 billion (2008 business case) with little explanation, the City of Burnaby complained that this increase was unreasonable – especially as it brought the cost difference with SkyTrain down to a mere $150 million (12%). Light Rail advocates and critics, including Gerald Fox, complained that the cost increase was manipulated to favour SkyTrain.
It was noted in the 2006 study that the cost estimate of then was done at a 90% preliminary design stage – not a fully detailed design stage presenting a finalized cost. It thus seems conceivable that costs increased while the final alternative was being analyzed for the 2008 business case.
Recently I performed some research on the capital costs of Canadian rail transit systems. With several rapid transit and light rail systems now proposed across the country, I took the opportunity to compile an inflation-adjusted comparison of the projects’ capital costs – adjusting each project for the amount of grade-separation (tunnelled, or elevated) and using that as a guideline to compare the costs. This extensive research took me several weeks to complete as I had to manually measure most of the proposals to assess the amount of grade-separation.
Unsurprisingly, I reached the conclusion that – with the steepest trend in perecentage-to-cost – bored tunnel is the most expensive alignment to construct.
The Evergreen Line, no matter whether it were to be SkyTrain or Light Rail Transit, has a 2km bored tunnel as a part of its alignment through the mountainous terrain between Burquitlam and Port Moody. This accounts for about 20% of the entire route.
My measurements indicated that the 2006 cost-per-km estimates were the lowest of the other projects. The estimate was significantly below other projects with a ~20% bored tunnel percentage, and below the average trend line that related percentage in a tunnel to rapid transit cost per km.
In other words, the 2006 cost estimates are too low and were probably incorrect.
Now that we know how much trouble it took to construct the Evergreen Line’s 2km tunnel, it’s certain that the LRT project’s final cost would have come closer to $1.25 billion. LRT tunnels need to account for pantographs and higher vehicle heights; whereas the linear motors used on our SkyTrain technology lines are more optimal for tunnels as the train is lower and closer to the ground. As a result, an LRT tunnel would have been larger and more complex and would have likely lead to additional potential problems, necessitating a higher contingency budget.
Just imagine what kind of liability chaos there’d be if a sinkhole did open under a home above the tunnel route. It hasn’t happened with our SkyTrain tunnel, but it’d be more likely under a larger tunnel (and a larger, more powerful tunnel boring machine) needed for an LRT tunnel.
Most critics were adamant to point out that the operating costs rose from $12.21 million in 2006, to $15.3 million in 2008 (both measurements were in 2007 dollars). What was overlooked by these critics is that the cost increase can be explained by a difference in service frequency.
The 2006 business case’s estimate was based on a 6 minute initial operating frequency. The 2008 business case’s operating costs were based on a higher 5 minute initial operating frequency to presumably make the LRT service more competitive and boost its business case (the higher frequency would have also added additional trains, explaining part of the capital cost increase). Whereas the 2008 cost estimates are 25% higher while a 5 minute frequency is 20% higher than 6, the newer numbers seem just about right to me.
The City of Burnaby’s assessment of travel times suggested that the SkyTrain alternative’s travel time estimates were far too high and the LRT alternative’s estimates were far too low. It provided this graphic to show the disparity:
Burnaby complained that the Evergreen Line’s LRT speed estimates were lower than two existing LRT systems in Canada (Calgary and Edmonton).
However, most of Calgary and Edmonton’s LRT systems are built off-street, and with gated crossings and absolute priority like railway systems. Most of the Evergreen Line as an LRT would be in the middle of streets and would have to follow the roadway speed limits (typically 50-60km/h). Naturally, this would result in slower average speeds than Calgary and Edmonton, where trains may run at 80km/h on dedicated rights-of-way.
While the SkyTrain alternative had much higher average speeds than the existing Expo & Millennium Lines (average of 43km/h), the addition of Lincoln Station to the proposal has added some length to the travel time to the extent that the Evegreen Line’s end-to-end travel time is now usually described as 15 minutes – an average speed of 43.6km/h.
At the end of the day, these differences aren’t really dictated by the transit technology. The Evergreen Line will have the system’s longest station-less segment, which is largely in part due to the 2km tunnel between Burquitlam and Port Moody stations. The higher average speeds near here would be comparable to other long sections crossing geographical features, such as the 2.3km SkyBridge segment on the Expo Line over the Fraser River.
Gerald Fox also raised an issue that the stated maximum LRT speed in the 2008 business case (60km/h) was lower than the potential speed limits that could be achieved in the off-street, 2km tunnel – claiming that the 2006 business case accounted for faster running speeds of up to 80km/h inside the tunnel.
However, the end-to-end travel time estimates in the 2008 business case were actually lower than that of the 2006 business case by 0.4 minutes.
The 60km/h expression in the 2008 business case was probably meant to highlight the speed on most of the on-street sections (outside of the tunnel), which accounted for as much as 80% of the route.
Based on the data I’ve collected above it is clear that SkyTrain and LRT were not compared unfairly.
There is little reason to believe that the 2008 business case was wrong in assumptions. There could’ve been better distribution of the info at hand, and some improvements in the planning process (like the addition of Lincoln Station from the beginning). However, no skewering of the numbers and manipulation to favour SkyTrain has taken place.
2. Was ridership over-estimated?
Ridership was an additional concern raised by the City of Burnaby, which complained that the ridership estimates for the SkyTrain option (at 2.1 million passengers annually/km) were too high, and that the LRT ridership estimates were too low. Burnaby complained that the 2008 business case did not provide a proper explanation of how ridership was estimated.
The LRT ridership estimates were said to be too low because they were lower than two existing Canadian LRT systems (40% lower than Calgary, and 9% lower than Edmonton). For the same reasons as I explained above, it’s not possible to put the Edmonton and Calgary systems in the same category as an Evergreen Line LRT. The Evergreen Line LRT is largely on-street; the Calgary and Edmonton systems are not, and tend to run on exclusive rights-of-way at speeds of 80km/h.
This leaves the high ridership estimates with the SkyTrain system. The auditor general raised an issue that the SkyTrain ridership assumptions with the Evergreen Line were made with assumptions that a completed transit network would be built by 2021 following the 2008 Provincial Transit Plan. This included SkyTrain extensions in Broadway and Surrey, neither of which will be built by 2021 based on the current situation.
Burnaby complained that at 2.10 million annual passengers per km, the estimates were higher than the existing SkyTrain system (1.60 million annual passengers per km) and thus much higher than would be realistic.
However, it’s important to note that the SkyTrain ridership estimate in Burnaby’s report was taken before the Canada Line to Richmond was introduced in 2009. The Canada Line’s opening broke ridership records with ridership almost immediately shooting up to its current level of 40.2 million passengers per year or over 120,000 per weekday – numbers that were well ahead of schedule even beat entire, city-wide LRT systems in ridership.
When this annual ridership is worked out per-km, the Canada Line is carrying 2.10 million annual passengers per km – the same amount that was projected for the Evergreen Line – and as such is also contributing to an increase in the system-wide value.
A huge part of the reason the Canada Line was so successful was because efforts by the City of Richmond to make the elevated segment on No. 3 Road at-grade (like a light rail system) were defeated, resulting in the construction of a fully grade-separated line. The full grade-separation enabled higher trip speeds, which have been cited in rider surveys as the #1 most-liked aspect of the Canada Line system – outpacing every other favourable aspect mentioned by riders.
The Evergreen Line’s SkyTrain switch decision was largely based on favouring the faster travel-times and transferless journeys of a SkyTrain system. It’s thus conceivable that the Evergreen Line could see the same kind of ridership success that the Canada Line did.
3. Were the risks properly and thoroughly assessed?
The auditor general commented that the 2008 and 2010 business cases did not provide information on the risks that came with connecting Evergreen Line outcomes with the performance of other parts of our regional transit system. In particular, the Evergreen Line’s performance estimates did not account for the potential impacts of:
- the level and coverage of bus connector services on ridership;
- parking at the more popular Evergreen stations;
- changes to the West Coast Express (WCE), which provides peak commuter services for passengers who want to travel between the northeast Metro Vancouver and downtown Vancouver
- Evergreen services on those parts of the SkyTrain system that are near or at capacity in the commuting peak periods (for example, around Broadway station).
These concerns present significant risks and it is of my opinion that they should have been addressed.
However, accounting for these risks whenever a large transit priority is laid out in our region is hardly ever common practice. Today’s transit projects have continued the practice of tying performance estimates to grandiose plans for the rest of the regional transit system, like the transit vision crafted by the Regional Mayors’ Council that was defeated in the March 2015 referendum.
When the 2015 referendum was defeated, so too were the additional commitments to connecting bus service that would have been critical to the success of the included rapid transit projects. It’s raised concern among decision-makers such as Coquitlam Mayor Richard Stewart, for example, who raised a concern with the potential costs of increasing parking as additional bus services connecting to the Evergreen Line were rejected along with the other proposals.
Nevertheless, local governments have forged ahead in planning for these lines, despite the new risks created with the lack of a regional vision component. As I believe that there will be opportunities in the future to return to those other critical transit priorities, continuing planning anyway – rather than letting all transit priorities come to a halt – is the best practice.
4. How are we going to measure performance?
The last issue concerned the collection of performance data to measure performance after the line’s opening. No framework had been set in the 2008 and 2010 business cases, and the lack of such a framework would have a consequence on future transit planning.
However, the Auditor did acknowledge in his report that a framework could still be completed in time for the line’s opening. Although it remains to be said if the province has followed through on this recommendation, this issue isn’t relatively as much of a concern as the others as it has an immediate, clear solution.
So what’s the real “Evergreen Line Story”?
When the Evergreen Line was changed to a SkyTrain extension project in 2008, the switch came after an extended halt in design work and public consultation.
Like today’s rapid transit projects, the Evergreen Line was determined through a multiple-account evaluation that includes a Phase 1 (draft option comparison), Phase 2 (detailed option comparison) and a Phase 3 (finalized option comparison and detailed design).
The 2006 study was finalized at the phase 2 stage, and it noted that its cost estimates were done at the 90% preliminary design stage.
After that, there was silence in the project design work.
At the time, there were plenty of issues around project funding (which can be backtracked to on the Skyscraperpage archives). I can understand delays with transit funding (still a very big issue with projects today). However, the funding issue shouldn’t have delayed detailed design work on the Evergreen Line LRT project. For awhile we didn’t hear anything from planners, politicians or anyone involved regarding the project’s design until rumours of a major announcement surfaced in January 2008. The final business case that was then released in February had been completed by the province rather than TransLink.
For awhile we didn’t hear anything from planners, politicians or anyone involved regarding the project’s design
So it honestly has me raising questions: what exactly was going on? Why did Evergreen Line design works come to a stop, and why didn’t the next phase of consultations take place? Did planners at TransLink realize they under-estimated the LRT costs, and had nervousy about going public with the news? Did local governments start losing confidence in the at-grade project’s business case?
There’s all these disconnects that don’t seem to make sense, and I would argue that this should have been of far greater concern than the provincial government’s decision to switch the project to SkyTrain. It’s not the province’s fault the planning department of the time had decided to cut us off for just over a year on the project’s progress. It’s almost as if the sudden switch to SkyTrain was a measure to deal with these serious problems.
All I do know is that in October 2007, the B.C. Finance minister came to the public with a statement that the Evergreen Line’s progress had indeed been frozen, but that it wasn’t due to the funding shortfall…
Finance minister Carole Taylor: The premier did say last week that the Evergreen will be built. The funding is not holding it up. They haven’t decided on exactly the route and exactly the stops. So, we have made the commitment to financially be there when everybody’s ready to go.
(Above quote from: Evergreen Line not held up by funding, finance minister says – Coquitlam NOW)
This almost certainly indicates that the LRT planning department had run into issues with the design, since the 2006 business case had anticipated the start of construction by September 2007.
Instead, in October 2007 the design hadn’t been finished and the planners in-charge “hadn’t decided on exactly the route and exactly the stops.”
You be the judge, but it sounds a heck of a lot like that the province managed to narrowly get us out of an Evergreen Line LRT fiasco in its decision to build SkyTrain instead.
Jaded by SkyTrain and a lack of LRT
There hasn’t been a single, grade-level Light Rail project approved in this region except for the currently proposed project in Surrey, and that’s probably what has raised the irk of some people who have been enthusiastic about the idea of at-grade rail. It’s probably why there’s a commonly-held belief that only provincial government overrides result in SkyTrain, and that at-grade Light Rail systems don’t have major shortfalls of their own that have resulted in their rejection here in Metro Vancouver so far.
However, the argument that lack of at-grade rail infrastructure in this region really caused us to lose out on transit benefits (i.e. we could have built a bigger transit network!) is entirely debatable. The benefits of SkyTrain should be clear to decision-makers, planners and transit enthusiasts in our region.
Despite the constant use of grade-separation and SkyTrain technology, Metro Vancouver’s SkyTrain network expanded at a faster pace than any other system in Canada. Vancouver’s rapid transit growth has lead Canadian cities – and when the Evergreen Line opens to the public next year, we’ll have the longest rapid transit system in Canada spanning nearly 80km – and the longest driverless transit network in the world. The lower operating costs of driverless trains make it possible to keep expanding our transit network without bankrupting our operating budget on the cost of drivers.
Despite the constant use of grade-separation and SkyTrain technology, Metro Vancouver’s SkyTrain network expanded at a faster pace than any other system in Canada.
SkyTrain also has the highest ridership of any rapid transit system in North America that isn’t classified as “heavy” rail. At nearly 9,000 boarding passengers per kilometre, SkyTrain outperforms every single at-grade rail system in Canada and the U.S.
SkyTrain ridership/km vs. other transit systems
Data is from the American Public Transit Association (Q3 2014) unless stated
|City||System name (type)||Weekday daily boardings||Daily boardings/mile|
|Boston||MBTA light rail (LRT)||214,500||8,250|
|Edmonton||Light Rail Transit (LRT)||98,144*||7,550|
|San Francisco||Muni Metro (LRT)||145,500||4,076|
|Newark||Newark/Hudson Bergen LRT||72,939**||3,143|
|Minneapolis||METRO Light Rail (LRT)||64,500||2,938|
|Los Angeles||Metro Rail (LRT)||203,400||2,892|
|Seattle||Link Light Rail (LRT)||40,300||2,330|
|Portland||MAX, Streetcar (LRT)||113,900||2,330|
|San Diego||Trolley (LRT)||124,100||2,320|
|Phoenix||Valley Metro (LRT)||41,200||2,060|
* Q3 numbers were not reported. Data from Edmonton Transit, collected during the same period, used instead.
** Q3 numbers were not reported. NJ Transit’s own FY2014 data is used in place (the same number is reported in APTA’s Q4 ridership report).
On top of everything, SkyTrain has made us one of the most successful metropolitan areas in transit ridership with an annual ridership per capita that is 3rd highest on this continent (beat only by New York City and Greater Toronto)
|New York City||19,831,858||3,893,854||196|
|San Francisco Bay||6,349,948||476,219||75|
|Seattle/Puget Sound Region||3,807,148||175,215||46|
Data above from South Fraser Blog
With these thoughts laid out, I’d like to see anyone try to claim that decisions resulting in SkyTrain projects over LRT are solely a result of senior-government overrides.
…or that anyone’s manipulating data to favour SkyTrain in rapid transit studies, because that’s simply not true.
Featured: Evergreen Line construction image posted by nname on SkyscraperPage