PRE-DRIVE C2X Deliverable D0.3 Final report_20100929.pdf

Final Report PRE-DRIVE C2X 29.9.2010
Figure 21: Highway scenario in the north of the city of Frankfurt/Main
Results
Urban Scenario
Figure shows the travel time benefit that is achieved in the urban scenario by
the traffic information & recommended itinerary. The travel time benefit is the
average of the saved time of all classic (blue line) or V2X-based (red line)
vehicles in percent in comparison to the travel time if no V2X application for the
circumnavigation of congested areas is used. Because the circumnavigations of
the V2X-based vehicles unload the congested areas, also conventional vehicles
without V2X benefit. If the V2X penetration rate is low (about 10%), the V2Xbased
vehicles have the highest benefit (about 23%) whereas the classical
vehicles profit marginally only (about 3%). When the V2X penetration rate
increases, the benefit of the V2X-based vehicles decreases slightly while the
benefit of the classical vehicles grows (e.g. between 10% and 40%, the benefit
of the V2X-based vehicles is reduced from 23% to 20% whereas the benefit of
the classical vehicles is improved from 3% to 17%). The reason for this trend is
the higher number of vehicles using circumnavigations. At 65% penetration rate,
the benefit of both, classical and V2X-based, vehicles is the same (about 22%).
At higher penetration rates, the benefit of classical and V2X-based vehicles
decreases slightly on a high level (around 20%). The reason for this effect is the
higher traffic density on all circumnavigation routes. Because more vehicles
come back from a circumnavigation to the main route, vehicle of the main route
have to reduce their speed on intersections. As a result, the travel time
increases marginally there.
Deliverable D0.3 Version 1.0 36
Final Report