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October 2000

Guided Bus System Moving Forward for DC Suburbs
IVsource.net
29 October 2000

Moving forward, but slower than a bus with two flats.  Here's a brief article on how the Dulles Bus Rapid Transit system fits into the overall picture of WMATA's long range plans for Washington, DC transportation.


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At the International Transit Summit on October 9, the Washington Metropolitan Area Transit Authority (WMATA) -- known locally as "Metro" -- provided their "big picture" look at the expansion of their rail and bus systems over the next 25 years.

Enhancements Clearly Needed to Meet Growth

WMATA is a major player in Washington's transportation picture, where 18% of work trips happen on either rail or bus lines operated by Metro.  Every weekday, they carry an average of 475,000 people on their bus system alone, which is the 6th largest in the US.  They've seen success in efforts to increase ridership, as growth in the last year has been over 11%.

As the second most congested region in the country, area transportation planners still have a lot of work to do in coming years, just to keep people moving.  With transit trips projected to increase by 49% by 2025, WMATA has set a goal of doubling ridership in the next 25 years.  Plans already call for extending their existing 103 mile rail system by over 50 miles to meet that need, but they acknowledge that service enhancements are needed as well, if they are to meet that goal.

Looking to Smarter Buses

A "Vision Plan" adopted by the regional Metropolitan Planning Organization and the WMATA board includes both improved bus service levels and expanded service areas as components in meeting the capacity goal.  A Regional Bus Study is now underway to identify needs, and is scheduled to be completed by late 2001.  The Plan does include a list of ITS projects; vehicle intelligence seems to be limited to mention of "onboard bus diagnostics systems."

However, the system enhancement of paramount interest to the IV community is of course the much-talked-about Dulles Bus Rapid Transit system -- which clearly stands as a key component of their future planning, though not packaged as an ITS project.

BRT Still Facing Uphill Ride

Looking long-term, WMATA envisions rail service provided to the suburbs:  an extension to the large and still-growing office/retail destination of Tyson's Corner by 2006, and to Dulles International Airport and beyond by 2010.  Dulles sits within Loudon County, home to hordes of commuters who now jam highways leading into Washington and the office towers at Tyson's Corner.  The continued growth of the red-hot technology corridor along the Dulles Access Road, coupled with the Smithsonian's plans for an Air & Space Museum Annex at Dulles -- predicted to be one of the top 5 tourist destinations in the US when opened -- has got transportation planners more than a bit anxious about getting service running in this corridor.

Rather than waiting the many years typically needed to raise funds and build a full-on rail system, WMATA instead plans a phased implementation of BRT in this corridor, with stations convertible to rail when funding and ridership levels come together.

The current plan -- based on a proposal assembled by a consortium headed by Washington Group International (formerly Raytheon Engineers & Constructors) -- is for a 24 mile system with 10-13 stations.  The implementation currently being promoted calls for bus platforms, built to rail specifications, to be located within the median of the existing Dulles Toll Road -- in this way, the platform infrastructure is ready to go when rail is implemented.  The tolerances for vehicle movements in such a scenario call for electronic lateral guidance and precision docking for buses.

Once thought to have a high potential as an early flagship for intelligent vehicle system implementation in the bus transit arena, promoters of the Dulles BRT project have been unsuccessful in moving it forward on the fast track.  Instead, project plans are being subjected to all of the requirements of a typical major transportation project -- WMATA reported that an environmental impact assessment is the next step, a process which can take a year or more.  Meanwhile, preliminary engineering is underway.

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For more information ...

... see an in-depth article on planning for the Dulles BRT in the IVsource archives.

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