DRAFT
WSPTP_102015
WSPTP_102015
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Washington State Public Transportation Plan<br />
Chapter Three: Goals and Action Strategies<br />
Table 1 94<br />
25 Non–Lane-Widening Strategies to Improve Capacity<br />
FREEWAY ARTERIAL BOTH<br />
HOV Lanes<br />
Ramp Metering<br />
Ramp Closures<br />
Congestion Pricing<br />
Pricing by Distance<br />
High Occupancy Toll<br />
and Express Toll Lanes<br />
Weaving Section<br />
Improvements<br />
Frontage Road Interchange<br />
Modifications<br />
Signal Retiming<br />
Signal Coordination<br />
Adaptive Signals<br />
Queue Management<br />
Raised Medians<br />
Access Points<br />
Right/Left Turn Channelization<br />
Alt Left Turn Treatments<br />
Narrow Lanes<br />
Reversible Lanes<br />
Variable Lanes<br />
Truck Only Lanes<br />
Truck Restrictions<br />
Pre-Trip Information<br />
In-Vehicle Info<br />
Variable Message Sign/<br />
Dynamic Message Sign<br />
project demonstrated significant travel time savings from a variety of operational strategies<br />
that do not require lane widening or new roadways.<br />
It is likely that technology innovations will even further expand the tools available for<br />
adaptive capacity. Key to the consideration of adaptive capacity opportunities is careful<br />
evaluation of which tools can get more out of the system and increase system performance.<br />
Planners, elected decision-makers and the voting public need this data to make informed<br />
judgments about the most efficacious use of public dollars.<br />
EVALUATING ADAPTIVE TRANSPORTATION CAPACITY<br />
• Flexible<br />
• Innovative<br />
• Efficient<br />
Desired<br />
Outcomes<br />
Measures<br />
Currently Available<br />
• Toll lane usage<br />
• HOV lane usage<br />
• Improved flow<br />
Measures to<br />
be Developed<br />
• Adaptive Transportation Capacity<br />
Dashboard:<br />
»»<br />
Increased capacity without new/<br />
widened lanes<br />
»»<br />
Technology adaptation<br />
76<br />
WSDOT | <strong>DRAFT</strong> October 2015 | WaTransPlan.com