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DRAFT

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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

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