A grab driver is traveling at 15 m/s when the traffic light 787 ft ahead suddenly turns red. The duration of the red light is 0.4 min. Determine the following: a) the required uniform deceleration in m/s? of the motorcycle if the driver intends to pass the light without stopping just as it turns green again (report the final answer in 3 significant digits) b) the velocity in km/hr of the motorcycle as it passess the light (report the final answer in 3 significant digits)

A grab driver is traveling at 15 m/s when the traffic light 787 ft ahead suddenly turns red. The duration of the red light is 0.4 min. Determine the following: a) the required uniform deceleration in m/s? of the motorcycle if the driver intends to pass the light without stopping just as it turns green again (report the final answer in 3 significant digits) b) the velocity in km/hr of the motorcycle as it passess the light (report the final answer in 3 significant digits)

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter3: Characteristics Of The Driver, The Pedestrian, The Bicyclist, The Vehicle, and The Road

Section: Chapter Questions

Problem 25P

See similar textbooks

Similar questions

A motorist is traveling at v0 = 63 km/h when she observes that a traffic light x = 448m ahead of her turns red. The traffic light is timed to stay red for 26s. If the motorist wishes to pass the light without stopping just as it turns green again, determine (a) the required uniform deceleration of the car and (b) the speed of the car as it passes the light.
You are to determine the duration of the yellow light at a highway intersection. Assume that cars will be approaching the intersection traveling at 70 mph, and that the reaction time of the driver is 2.5 sec and that cars achieve a deceleration of 1/8 of the gravitational acceleration. if g=32.2 fps^2, a. how long must the traffic light remain yellow to allow drivers to come to stop before the traffic light turns red? b. what is the minimum distance of a car from the intersection when the lightturns yellow to ensure that it comes to a full stop before the intersection?
A motorist is traveling at 54kph when she observes that a traffic light 240 m ahead of her turns red. If the motorist wishes to pass the light without stopping just as it turns green again, determine (a) the required uniform deceleration of the car, (b) the speed of the car as it passes the light.
The driver of a car travelling at a certain speed suddenly sees an obstruction ahead and travelled a distance of 55.8 m during the perception time of 1.45 sec. Determine the car's speed of approach in kph.
The distance traversed during perception-reaction time is equal to 10 meters if the speed of the car is 10 meters per second, and the perception-reaction time of the driver is 1 second. TRUE OR FALSE
A vehicle is moving along a straight line having an initial speed of 10 m/s. It is experiencing a deceleration of -0.5v2 m/s2 . Determine the distance travelled by the vehicle after three seconds.
A driver driving at 69 kph at a straight flat portion of the highway suddenly encounters an obstruction. He applies his brakes. If the coefficient of friction of the roadway to the tires is equal to 0.5, calculate the maximum safe distance (rounded to the nearest meters) the driver can apply his brakes to avoid collision. g = 9.81 m/s^2
A vehicle (SUV) is to overtake a bus as it enters an acceleration lane. The speed of the SUV is 80 kph initially. The bus is at the same speed as the SUV. Given the perception reaction time as 2.70 seconds and the average acceleration of the vehicle is 2.55 m/s2, solve the following: provide solution asap a. The distance (in ft) traversed during the perception and reaction time and during the initial acceleration to the point of encroachment on the left lane.b. The distance (in yard) travelled by the passing vehicle occupies the left lane if the opposing vehicle travelled at 75 kph and the time for the passing vehicle to occupy the left lane is 20 seconds. c. The minimum passing sight distance (in m) if the SUV's velocity to overtake the bus is 55.92 miles per hour while the distance between the opposing vehicle and the SUV after its !PAnguygt is 295 ft. The time for the SUV to occupy the left lane is 0.23 minutes. d. The passing sight distance (in furlong) that the SUV could move…
Three seconds after automobile B passes through the intersection shown, automobile A passes through the same intersection. Knowing that the speed of each automobile is constant, determine (a) the relative velocity of B with respect to A, (b) the change in position of B with respect to A during a 4-s interval, (c) the distance between the two automobiles 2 s after A has passed through the intersection.
a driver is traveling at 65 mi/h rounds a curve on a level grade to see a truck overturned across the roadway at a distance of 350 ft. if the drivers is able to decelerate at a rate of 10 ft/s2. At what speed will the vehicle hit the truck? Plot the result for reaction times ranging from 0.5 to 5 seconds in increments of 0.5 seconds
A car moving at 60 ft. per sec is brought to rest in 12 sec with a deceleration which varies uniformly with time from 2 ft per sec^2 to a maximum deceleration. Compute the distance traveled in stopping.
A motorcycle patrolman starts from rest at A 2 sec. after a car speeding at the constant rate of 120 kph passes point A. If the patrolman accelerates at the rate of 6 m/s2 until he reaches his maximum permissible speed of 150 kph, which he maintains. a. Find the time for the patrolman to reach a maximum permissible speed of 150 kph. b. How long did it take the patrolman to overtake the car from the time he starts from A.? c. Calculate the distance S from point A to the point at which he overtakes the car.