Problem 28: Compute the minimum time headway for cars moving at an average speed of 60 kph. The average length of car is 4.2 m. Reaction time is 0.80 sec.
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- Problem 22: A car travelling at 50 mph is 80 m from the rear side of a parked bus ahead. If the driver applies the brakes immediately ( perception time is 2 seconds ) and begins slowing the vehicle at 10 m/sec. Find the distance from the stopping point to the rear side of the bus.A car is traveling at 15 m/s, when the traffic light 60 m ahead turns yellow. If the car decelerates, the time needed to stop the car at the light. 7 secs O 8 secs 5 secs 6 secsA car travels from A to B with an avetage speed of 80kph and back to A without loss of time at an average speed of 100 kph. a.Determine the distance between A and V if the shortest time covered was 45 mins. b. Determine its average velocity for the entire trip c. determine the average speed of the entire trip
- A car travels from A to B at an average speed of 80 kph and back to A without loss of time at an average speed of 100 kph. Determine the average speed for the entire trip. A) 9.88 kph B 9.89 kph 98.98 kph 88.89 kph E o kphWhat is the intersection sight distance (m) needed at a stop controlled intersection for a passenger car to turn left onto a 2-way, 4-lane road with a design speed of 80 km/h? Assume the vehicle turns into the closest lane. [round to the nearest meter] Response Feedback: ISD=0.278V t major g Remember, tg is increased by 0.5 seconds for the additional lane.The speeds of overtaking and overtaken vehicles are 80 kmph and 60 kmph respectively. If the acceleration of the overtaking vehicle is 2.5 kmph per second,calculate the safe passing sight distance for (1) single lane one way traffic (ii) three lane both way traffic. Assume perception time of driver = 2 sec.
- Determine the traffic flow if 100 cars pass a known location during 10 s.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.Calculate the passing sight distance on a two lane road having the design speed of 86 kmph and reaction time 2 sec. Assume one way traffic. Take acceleration of overtaking and overtaken vehicle as 3 m/s2 and 1.5 m/s2 respectively. Assume that overtaken vehicle starts accelerating after the reaction time of overtaking vehicle. Take space headway as 18 m.
- Question The theoretical capacity of a traffic lane with one way traffic flow at a stream speed of 60 kmph will be veh/hr/lane. Assume, reaction time = 0.7 seconds and length of vehicle as 6 m.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.Observation post reveals that 5 vehicles passed through at intervals of 8 s, 9 s, 10 s, 11 s, and 13 s, respectively. The speeds of the vehicles were 80 kph, 76 kph, 70 kph, 80 kph, and 50 kph, respectively. Compute the time mean speed. 71.2 kph b. Compute the space mean speed if the distance traveled by the vehicles is 250 m. 88.24kph If the density of traffic is 20 vpk, compute the rate of flow of traffic in vph. 1765vph 5. a. c.