. Proceedings of the annual convention . op beforecrossing, etc. Even with no trains on or approching such grade crossings, highwaytraffic, due to approach warning and crossing signs, will, by the observance of suchsigns, be delayed. The reduction in speed of a motor vehicle, the starting and stopping of such avehicle, as well as its stopping and waiting, in increased cost of operation due towear on tires and brakes, additional consumption of gasoline, and time lost. These costdgures have been determined to be as follows: Value of Time Vehicle Stopped, Operating Value of Time Based on
. Proceedings of the annual convention . op beforecrossing, etc. Even with no trains on or approching such grade crossings, highwaytraffic, due to approach warning and crossing signs, will, by the observance of suchsigns, be delayed. The reduction in speed of a motor vehicle, the starting and stopping of such avehicle, as well as its stopping and waiting, in increased cost of operation due towear on tires and brakes, additional consumption of gasoline, and time lost. These costdgures have been determined to be as follows: Value of Time Vehicle Stopped, Operating Value of Time Based on Costs Making Stop One Minute Total S/eedMPH (Cents) (Cents) (Cents) (Cents) 10-0-10 ... 20-0-20 30-0-30 40-0-40 S0_0-S0 60-0-60 The foregoing table was developed from information obtained from the IowaEngineering Experiment Station in cooperation with the United States Public Roads Highways 495 50 250 45 225 25 o 125 E 2 10. Source: Bureau of Public Bureou of Census** Growth of the Motor Vehicle Industry in Relation toPopulation ond State Highway Systems Administration, and was covered in Iowa Engineering Experiment Station Bulletin , Iowa State College, 1945; Technical Bulletins Nos. 7 and 17, OrcRon State HighwayDepartment, 1937 and 1944; Report on the Highway Needs of the National Defense,by the Commissioner of Public Roads Administration, Washington, 1949; AssociateDirector Wilbus S. Smith, Yale University, Bureau of Highway Traffic, 1951; DeputyCommissioner H. E. Hilts, United States Bureau of Public Roads, 1951; and figures are for average passenger cars making a normal stop. The Value ofTime Making Stop is the time lost in the complete act of decelerating to zero velocityand immediately accelerating back to original speed. The Value of Time Stopped isbased on 1 min standing time, which has been valued at cents for
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