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Dynamic ride-sharing and fleet sizing for a system of shared autonomous vehicles in Austin, Texas
The introduction of shared autonomous vehicles (SAVs) in cities could potentially increase the number of vehicle miles traveled (VMT). The implementation of dynamic ride-sharing (DRS) systems could limit this increase and potentially result in a net reduction in VMT.
“DRS appears critical to avoiding new congestion problems, since VMT may increase by over 8 % without any ride-sharing.”
“DRS allows for on-demand carpooling, for travelers with similar or overlapping paths across both time and space. The new framework allows those willing to share rides to be linked in the same SAV, if their preference requirements are all met.”
“Under base conditions for 1.3 % of Austin trip making within a 24 mi 9 12 mi geofence, with conservative DRS parameters,excess VMT may be cut from 8.7 to 4.5 %; and, as trip-making intensity rises and DRS parameters are loosened, greater ride-sharing and less relocation may actually reduce net VMT.”
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