I-66 Multimodal Study Final Report - Virginia Department of ...

Multimodal PackagesFigure 3.21 Package 2 Improved Travel Time by Mode Compared to CLRP+Package 2, like Package 1, included a tolling strategy on I-66. For model purposes the toll wasset to keep the traffic levels on I-66 from reaching a congested state. The tolls were set separatelyfor the peak periods and the off-peak periods. The off-peak tolls were pivoted from thepeak tolls. Because the off-peak period covers hours outside of the peak when demand is muchmore variable, the toll price is more of a rough approximation. In the peak periods the demandis much more uniform and the toll is easier to model as a congestion pricing strategy. The tollfor the peak periods in the peak direction for Package 2 was set at 10 to 15 cents per mile (in2007 dollars) depending on the demand in each segment. In the reverse commute direction forthe peak periods the toll was about 20 percent lower than the peak.The tolling was set to achieve the particular flow rate on the facility within the modelframework. This does not necessarily represent the same goal or objective of toll setting for atraffic and revenue study, and thus care should be taken when reviewing the revenue figures.An estimate of $21 million in annual revenue was calculated, determined solely by multiplyingthe toll rate needed to maintain uncongested flow on I-66 as assumed in the model, by thenumber of non-HOV 3+ vehicles forecast to use the facility.Level of Service PerformanceThe following figures show the level of service for the highways and transit systems assumedin Package 2. For the highways the freeway level of service reflects the managed lane pricingstrategy of ensuring uncongested conditions. The arterials reflect the general level of congestionon the network in the peak directions. The transit frequencies and load factors reflect thehigh level of service being provided.3-34 I-66 Multimodal Study