The length of a highway is 550 m when a head-on vehicle collision occurred. Police reports show that neither human error norvehicle malfunction was the cause of the collision. Check if the length of the highway is sufficient for an overtaking maneuver.Accident Report:-Speed of Overtaking Car = 96 kph-Speed of Overtaken Car= 88 kph-Perception-reaction time = 2.5 sec-Average acceleration = 2.4 m/sec?-Time of the passing vehicle occupying the left lane (10.4 sec)- Distance between the passing vehicle at the end of its maneuver and the opposing vehicle= 84 m

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Answered: The length of a highway is 550 m when a…

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 10P

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A traffic data has been collected on two points on a highway: Point A and Point B, 450m apart. Observations at Point A shows that five vehicles passed the location at intervals 5, 5, 3, and 3 sec respectively. The speed of the vehicles at point A are 61, 59, 70, 79, 55 km/hr respectively. Assume the speed is maintained until point B. What is the density, in veh/km.
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.
The distance traveled by the vehicle in the opposite direction is 100 m on two lane two lane roadway. If the acceleration of overtaking vehicle is 3 km/h/sec and time of initial manoeuver is 4 sec. thus the safe overtaking vehicle speed rounded to integer number is ..........km/h
Assume you are observing traffic in a single lane of a highway at a specific location. You measure the average headway and average spacing of passing vehicles as 3.2 seconds and 20 m, respectively. Calculate the flow, average speed, and density of the traffic stream in this lane. thank you
In a 500 m section of highway, there are 10 vehicles observed. The time headway is 4 sec. Determine the space mean speed of the vehicles in kph.
A test of a driver's perception reaction time is being conducted a special testing track with wet pavement and a driving speed of 55 mi/hr. When the driver is sober, a stop can be made just in time to avoid hitting an object that is first visible 520 ft ahead. After a few drinks under exactly the same conditions, the driver fails to stop in time and strikes the object at a speed of 35 mi/hr. Determine the driver's perception/reaction time before and after drinking. (Assume practical stopping distance)
Assume you are observing traffic in a single lane of McArthur Highway at a specific location. You measure the average headway and average spacing of the vehicles as 3.2sec. and 50 m. respectively. Determine the traffic speed in kilometer/hour
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The lane of a 2-lane one way carriageway is closed for repairs. The maximum mean free speed under conditions of low flow in the 2-lane portion is 65km/hr. Under conditions of low flow, observations show that the maximum mean free speed in the bottleneck is also 65km/hr. The average space headway when vehicles are stationary is 12.5m. The volume of traffic on the 2-lane road is 1800 veh/hr. Assuming that the speed-concentration relation is linear, find The mean speed of traffic through the bottleneck caused by the closure of one lane; The mean speed of traffic in the congested conditions immediately on the approach to the bottleneck The mean speed of traffic on the carriageway clear of the influence of the bottleneck The rate at which the queue of the congested traffic enter
Car 1 is at gasoline station for 10 minutes. The driver notices that car 2 passes at a speed of 40 mph. How long will it take for Car 1 to overtake Car 2 if it accelerated at 4 m/s?
Data obtained from aerial photography showed nine vehicles on a 720 ft-long section of road. Traffic data collected at the same time indicated an average time headway of 4.2 sec. Determine the following. (a) the density on the highway (in veh/mi) veh/mi (b) the flow on the road (in veh/h) veh/h (c) the space mean speed (in mi/h) mi/h
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…

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