One driver is driving on a 3% upgrade roadway with an initial speed of 80 mph, assuming his perception-reaction time is 2 seconds, do the following: a. If the driver has to slow down to 0 mph to completely stop in front of an intersection. A stop warning sign for the intersection is clearly visible for a distance of 100 ft. How far in advance of the intersection must the sign be posted in order to insure that vehicles can safely stop, using deceleration rate=9 ft/sec²? b. Redo part a with the default deceleration rate. C. Redo part a, assuming deceleration rate is unknown but the friction factor=0.2.

One driver is driving on a 3% upgrade roadway with an initial speed of 80 mph, assuming his perception-reaction time is 2 seconds, do the following: a. If the driver has to slow down to 0 mph to completely stop in front of an intersection. A stop warning sign for the intersection is clearly visible for a distance of 100 ft. How far in advance of the intersection must the sign be posted in order to insure that vehicles can safely stop, using deceleration rate=9 ft/sec²? b. Redo part a with the default deceleration rate. C. Redo part a, assuming deceleration rate is unknown but the friction factor=0.2.

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter6: Fundamental Principles Of Traffic Flow

Section: Chapter Questions

Problem 15P

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