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SR 167 HOT Lanes - Removing the Double White Lines

Continuous access for the SR 167 HOT lanes
We removed the double white line and replaced it with a single white line. Drivers can enter and exit the HOT lanes nearly anywhere along the corridor. The HOT lanes are still open to solo drivers with a Good To Go! pass and free to carpools, transit, vanpools and motorcycles.

Why did WSDOT change access to the HOT lanes?
We collaborated with the Washington State Transportation Center (TRAC) at the University of Washington to implement a pilot project to study continuous access in HOT lanes. This pilot project was evaluated for its effects on safety, revenue, reliability and speed, customer attitudes, transit operations and lane system performance.

What’s changed?
The HOT lanes are striped with a single white line.
Vehicles are able to change lanes at almost any location instead of at
designated access points.

Previous access

New access


HOT lanes restriping diagram

HOT lanes are still open to solo drivers who choose to pay a toll:
Solo drivers still need a Good To Go! pass and the lanes are still free to carpools, transit, vanpools and motorcycles.

Double white lines, which are illegal to cross, remain for about 1 to 2 miles at the ends of the project to eliminate weaving and ensure drivers get the advantage of the reliable trip they paid for.

Evaluation
We collaborated with the Washington State Transportation Center (TRAC) at the University of Washington to create an evaluation plan. The plan identified how WSDOT would assess the effects of the project on safety, revenue, reliability and speed, customer attitudes, transit operations and lane system performance.

Funding
WSDOT applied for and received a $520,000 federal grant to fund the construction and evaluation work.

Timeline

Feb.-April 2014: Initial work on "before and after" analysis
April 28, 2014: Advertise project
Spring 2014: Open bids
Summer 2014:

  • Remove striping and signage
  • Drivers can enter and exit HOT lanes throughout the corridor
  • Finish collecting and summarize "before" data, prepare for "after" data collection

Late 2014-late 2015: Collect "after" data, perform major before/after analyses
Summer 2016: Deliver final evaluation report

Contact
Laura Johnson
WSDOT Communications
laura.johnson@wsdot.wa.gov
206-464-1249