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

Mobility OptionsThe percentage of total VMT that is over capacity in the evening peak period is the lowestof any of the mobility options as detailed in Figure 2.11;Total PMT in the study area decreases, with PMT shifting from arterials to freeways;There is some mode shift from transit to auto modes;As with Option B1, person throughput increases at the Beltway and Potomac River cutlines.A review of cutline data indicate that HOT lanes are not attractive for short, local trips andthat mostly longer distance trips are taking advantage of the I-66 HOT lanes; andAs with Option B1, there is a reduction in transit person throughput at the cutlines.Figure 2.11 Morning Peak Period VMT by Level of Service – Option B2Additional observations about this mobility option are noted below.Stakeholders were asked about tolling and capacity separately; therefore, we do not have aclean sense of the level of stakeholder support for this option.The toll in this option is lower than the toll in Option B1 because there is more roadwaycapacity to sell.It might be possible to add a lane only in critical sections of the corridor based on additionalanalysis of the results.Queuing at the Theodore Roosevelt Bridge from I-66 and U.S. 50 would need to beconsidered if this option is incorporated into a mobility package. The assessment wouldneed to consider the impact on traffic and congestion at the bridge because a large numberof trips produced in the study area are destined for the D.C. Core (33 percent in 2007 and 25percent in 2040).2-20 I-66 Multimodal Study