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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).

a) Vehicle hours of delay by decision parameter and max d/c.

Graph shows vehicle hours delay on the Y axis and Max D/C Ratio on the X axis.

At 1.02 max D/C ratio, the Vehicle Hours Delay are as follows for each decision parameter: NA, 209; Speed 45, 171; Speed 50, 159; Speed 55, 131; Volume 4410, 83; Volume 5040, 109; Volume 5670, 147; Volume 6300, 209.

At 1.04 max D/C ratio, the Vehicle Hours Delay are as follows for each decision parameter: NA, 259; Speed 45, 208; Speed 50, 198; Speed 55, 165; Volume 4410, 98; Volume 5040, 138; Volume 5670, 183; Volume 6300, 258.

At 1.06 max D/C ratio, the Vehicle Hours Delay are as follows for each decision parameter: NA, 314; Speed 45, 252; Speed 50, 228; Speed 55, 217; Volume 4410, 117; Volume 5040, 183; Volume 5670, 227; Volume 6300, 313.

At 1.08 max D/C ratio, the Vehicle Hours Delay are as follows for each decision parameter: NA, 368; Speed 45, 294; Speed 50, 288; Speed 55, 252; Volume 4410, 136; Volume 5040, 206; Volume 5670, 255; Volume 6300, 315.

At 1.10 max D/C ratio, the Vehicle Hours Delay are as follows for each decision parameter: NA, 434; Speed 45, 354; Speed 50, 328; Speed 55, 279; Volume 4410, 179; Volume 5040, 270; Volume 5670, 321; Volume 6300, 377.

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