Multimodal!

Congestion Monitoring
Corridor Congestion


Corridor Congestion

The corridor congestion ratio is an aggregation of the volume/capacity (V/C) ratios for the individual segments that make up a facility within a corridor. For each segment in a corridor, the V/C ratio, vehicle miles traveled (VMT), and VMT-weighted V/C ratio (the product of the V/C ratio and VMT) for the peak hour are calculated. The CCR is the sum of the weighted link ratios. It is intended to show the overall V/C ratio for the length of a corridor instead of a single location on the facility. 

Generally, the PM period displays higher corridor congestion than that experienced in the AM period. The PM period shows congestion along major facilities such as I-5 South, I-205 South, SR-14 Central, SR-503 South, and Fourth Plain East.

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This report was prepared by:
Southwest Washington Regional Transportation Council

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