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U.S.
Department of Transportation
Derivation of Benefit Estimates
from Literature
Application
Benefits Reported
Source
Eco-Transit Signal Priority
Reduced transit delay
up to 40% (not clear what the wait time for other traffic is); Second study reduction of 15% (3 minutes) in running time; in LA - bus running time was
reduced by 25%.
Transit Signal Priority
(TSP): A Planning and Implementation Handbook; May 2005
Fuel consumption
decreased by 3.6%, NOx were reduced by 4.9%, CO decreased by 1.8%, HC declined by 1.2 %, and PM decreased by 1.0%.
The Benefits of a Pilot
Implementation of Public Transport Signal Priorities and Real-Time Passenger Information; Lehtonen, Mikko and
Risto Kulmala; Paper
presented at the 81st Annual Transportation Research Board Meeting; Washington, DC; 13-17 January
2002.
Fuel consumption
increased from 0.3 % to 2.9%; HC emissions ranged from a decrease of 0.3% to an increase of 0.7%; CO decreased between 0.6 percent and 1.0 percent; NOx emissions increased between 0.18% and 1.1%
Evaluation of Transit
Signal Priority Benefits Along A Fixed-Time Signalized Arterial; Dion, Francois, et al.; Paper presented at the 81st Annual Transportation Research Board Meeting. Washington, District of Columbia; 13-17
January 2002
TSP studies reported
that bus emissions were reduced up to 30%, non-transit vehicle emissions increased up to 11%.
Transport Research
Laboratory. (1999). Monitoring and Evaluation of a Public Transport Priority Scheme in Southampton. Publication Report No. 413, University of Southampton and
University of
Portsmouth.
Eco-Adaptive Cruise Control
Fuel reductions up to
10% and CO2 and NOx reductions of 3%. PM increased by 3% in one pilot.
Mahmod, M. et el. (2009). Modeling reduced traffic emissions in urban areas.TRB 2010 Annual Meeting. Washington, DC: TRB.
Simulated results of
one ICC vehicle in a line of 10 manually operated vehicles yielded CO reduction from 18.4% to
60.6%, CO2 reduction from 8.1% to 60.6%, NOx 13.1% to 1.5%, HC from 15.5% to 55.4%, fuel consumption 8.5% to 28.5%.
Evaluation of the
Environmental Effects of Intelligent Cruise Control (ICC) Vehicles; Bose, A. and P. Ioannou; Paper presented at the 80th Annual Transportation Research Board Meeting.
Washington,
District of Columbia; 7-11 January 2001
27% savings in fuel consumption.
Eco-Driving Application
Development and Testing; Hesham A. Rakha
Extensive Analysis of Benefit Estimates Available in the Literature
Key Sources