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21st Century Operations Using 21st Century Technologies

Decision Support Framework and Parameters for Dynamic Part-Time Shoulder Use:
Considerations for Opening Freeway Shoulders for Travel as a Traffic Management Strategy

Long Description for Figure 28. Chart. Effects of varying peak bottleneck d/c ratios for a three-lane, Type A facility geometry and demand increase slope (offset = 30, medium).

b) Periods shoulder is open by decision parameter and max d/c.

Graph shows number of periods open on the Y axis and Max D/C Ratio on the X axis.

At 1.02 max D/C ratio, the number of periods open are as follows for each decision parameter: NA, 0; Speed 45, 34; Speed 50, 34; Speed 55, 39; Volume 4410, 51; Volume 5040, 43; Volume 5670, 37; Volume 6300, 34.

At 1.04 max D/C ratio, the number of periods open are as follows for each decision parameter: NA, 0; Speed 45, 34; Speed 50, 34; Speed 55, 40; Volume 4410, 51; Volume 5040, 44; Volume 5670, 37; Volume 6300, 34.

At 1.06 max D/C ratio, the number of periods open are as follows for each decision parameter: NA, 0; Speed 45, 34; Speed 50, 36; Speed 55, 40; Volume 4410, 51; Volume 5040, 44; Volume 5670, 38; Volume 6300, 34.

At 1.08 max D/C ratio, the number of periods open are as follows for each decision parameter: NA, 0; Speed 45, 34; Speed 50, 37; Speed 55, 41; Volume 4410, 52; Volume 5040, 45; Volume 5670, 37; Volume 6300, 34.

At 1.10 max D/C ratio, the number of periods open are as follows for each decision parameter: NA, 0; Speed 45, 34; Speed 50, 37; Speed 55, 42; Volume 4410, 52; Volume 5040, 45; Volume 5670, 39; Volume 6300, 34.

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