Abstract:
TRAVEL-TIME RUNS WERE MADE IN DIFFERENT HOURS AND DAYS TO OBTAIN REPRESENTATIVE AVERAGES OF WEEKDAY TRAVEL CONDITIONS AND CONDITIONS PREVAILING DURING HOURS OF PEAK TRAFFIC FLOW. RUNS WERE MADE OVER A NUMBER OF ROUTES WITH A TEST CAR EQUIPPED WITH STATISTICAL INSTRUMENTS DEVELOPED BY THE HIGHWAY RESEARCH BOARD COMMITTEE ON MOTOR VEHICLE CHARACTERISTICS FOR MEASURING SPEED, GASOLINE CONSUMPTION, BRAKING EFFORT, ENGINE TORQUE, AND THROTTLE OPENING. AVERAGE SPEEDS ON CONGESTED STREETS IN DOWNTOWN BOSTON WERE FOUND TO RANGE FROM 7 TO 12 MPH WITH LOW OF 3 MPH. ON SOME STREETS IN PEAK HOURS; AVERAGE GASOLINE MILEAGE ON THESE STREETS VARIES FROM 9 TO 13 MI. PER GAL. WITH A LOW OF 5 MI. PER GAL. ON SOME RUNS. AT SPEEDS BELOW 10 OR 12 MPH WHEN THE SPEED OF TRAFFIC IS CONTROLLED BY CONGESTION, A CLOSE RELATIONSHIP APPARENTLY EXISTS BETWEEN MILES PER HOUR AND MILES PER GALLON. THIS RELATION SHOULD BE USEFUL IN ESTIMATING GAS CONSUMPTION ON CONGESTED STREETS FROM THE TRAFFIC SPEED WITHOUT THE USE OF A GASOLINE METER. /AUTHOR/
Supplemental Notes:
Vol 31, pp 440 - 456, 8 FIG, 4 TAB. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
