Answered: The distance traversed during…

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

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

See similar textbooks

Related questions

Q: 3. An engineering student at Siliman Universty is driving on a level roadway and sees a construction…

Q: Problem 28: Compute the minimum time headway for cars moving at an average speed of 60 kph. The…

A: Given data, Average speed = 60 kph Average length of vehicle = 4.2 m Reaction time = 0.8 sec…

Q: 2/184 For the instant represented, car A is rounding th. circular curve at a constant speed of 30…

Q: Q1) While a car is moving with a speed 108 on a straight road the driver sees a truck which enters…

A: Consider the free body diagram Given Car speed=180km/h V1=108km/h=108×518V1=30m/s In 0.5 sec car…

Q: Th speeds of 25 cars were observed. 10 cars were noted to travel at 38 kph, 8 cars at 39 kph, 2 cars…

Q: Three seconds after automobile B passes through the intersection shown, automobile passes through…

A: Velocity of Vehicle A (VA)= 60m/s Velocity of Vehicle B (VB) = 40m/s Angle between both roads = 70°…

Q: 2. Figure shows the captured aerial photography showing the locations and speeds of 4 vehicles…

A: Space mean speed is the harmonic mean of spot speed. Space Means Speed = 4 / […

Q: Determine the required total passing sight distance for the following

A: the question deals with transportation engineering: answer: option b the explanation is given below

Q: Car B is traveling a distance d ahead of car A. Both cars are traveling at 60 ft/s when the driver…

A: Solution: Draw the schematic view of two cars Calculate the velocity of the car B as a function of…

Q: A car (SUV) is to overtake a bus as it enters an acceleration lane. The speed of the SUV is 80 kph…

Q: A driver on a level two-lane highway observes a truck completely blocking the highway. The driver…

A: Longitudinal friction(f) = 0.45 Distance at which vehicle stopped from truck = 10m The initial speed…

Q: A traffic stream on a particular highway is moving with speed of 62 kmph. The time interval between…

A: Given data- speed V=62 kmphDistance between consecutive vehicles = space headway (S)S=88 mTo…

Q: A driver travelling at 50 mph is 80 m from the wall ahead. Total perception-reaction time of the…

A: The Stopping sight distance is given by S=LL+LB Where, LL=Lag distance = 0.278V×tr LB=Braking…

Q: A car is travelling along a straight horizontal road with a constant acceleration of 0.75 m/s. The…

Q: Calculate the coefficient of return (e) for a ball thrown with an initial velocity of 5 m/s if its…

Q: Calculate the minimum sight distance required to avoid a head-on collision of two cars approaching…

A: Given :

Q: A rocket sled having an initial speed of 147 mi/h is slowed by a channel of water. Assume that…

Q: From a point beside a road, a one way traffic stream is observed to consist of - A stream of cars…

A: The velocity of the car is vc=90 kmph The time headway for the car is hc=10 s. The velocity of the…

Q: Initially, the car travels along a straight road with a speed of 35 m/s. If the brakes are applied…

Q: 4. The speed of a car moving on a single lane is €0 kph. If the length of the car is 4.2 m and the…

Q: A rocket sled having an initial speed of 172 mi/h is slowed by a channel of water. Assume that…

A: The given data is shown below: Initial speed=172 mi/h

Q: A motorist is traveling at 54kph when she observes that a traffic light 240 m ahead of her turns…

Q: A bowling ball is dropped from a boat so that it strikes the surface of a lake with a speed of 15…

A: The given data is shown below:

Q: Car B is traveling a distance dahead of car A. Both cars are traveling at 60 ft/s when the driver of…

Q: You are to determine the duration of the yellow light at a highway intersection. Assume that cars…

Q: The breaks are set on a train running at 30 mi/hr., when ½ miles from a station. The train slows…

A: Solution Given Data Train speed u= 30 mi/hr Distance travel s= 1/2 miles

Q: A grab driver is traveling at 15 m/s when the traffic light /87 ft ahead suddenly turns red. The…

A: given data : velocity of driver = 15 m/s distance of traffic light = 239.87 meter duration of light…

Q: 3.16 A motorist entering the exit ramp of a highway at 40 km/h immediately pplies the brake so that…

Q: A motorist is travelling at 72km/hr when he observes that a traffic light ahead of him turns red.…

A: Given s= 300m u= 20m/s t= 22s To Calculate - a) deceleration (a) = ? b) velocity (v) = ?

Q: A driver traveling at 50mph sees a wall at a certain distance ahead. The driver applies the brakes…

A: V=50mph t=3sec d3=12m

Q: Car B is traveling a distance d ahead of car A. Both cars are traveling at 60 ft/s when the driver…

A: Given data, Speed of both cars A & B, V = 60 ft/s Reaction time for both cars A & B, t =…

Q: The car is traveling at a constant speed through a dip in the road. The radius of curvature of the…

Q: Two detectors are placed 235 feet apart on the Taconic State Parkway, A vehicle activates the first…

A: The distance between two detectors and time taken between detectors have been given and it has been…

Q: - 1 attachment 1. Situation: You are to determine the duration of the yellow light at a highway…

Q: Car A is traveling at a constant speed va = 135 km/h at a location where the speed limit is 100…

A: Please refer the attached image for complete solution. THANK YOU.

Q: A grab driver is traveling at 15 m/s when the traffic light 787 ft ahead suddenly turns red. The…

Q: A burglar's car had a start with an acceleration of 2 m/s. A police vigilant party came after 5…

Q: 1. A bus on a level road is set on that it can increase the speed from rest to 51 kilometer per hour…

Q: The reaction time of the average automobile driver is about 0.7sec. The reaction time is he interval…

Q: 2. The driver of a car travelling at a certain speed suddenly sees an obstruction ahead and…

Q: road block 112 m away. He applied the brakes and the car decelerated uniformly at 6.4 m/s^2. It…

A: Hello dear this is the solution of your problem The answer is found to be Initial Speed of vehicle…

Q: 9.An alert driver (with a reaction time 0.5 second) is driving uphill on a 4% grade at 36 km/h on a…

A: The stopping sight distance of the vehicle is equal to the sum of lag distance and brake distance.…

Q: Two cars A and B are travelling in the same direction with a velocity of 30 m/sec. Car A is 250…

A: When the two cars overtake the position of both these cars will be same at that time

Q: A car was traveling at 130 kuo ner hoUr and suddenly the driver seen someone rossing the road from…

Q: our race cars are traveling on a 2.5-mile tri-oval track. The four cars are traveling at constant…

A: length of the track L=2.5 milenumber of car n=4obderving period t=30 min=0.5 hr Time mean speed:…

Q: 2. The speed of 35 cars was observed. 20 cars were noted to travel at 45 kph, 8 cars at 50 kph, 2…

A: Given data:- Total number of cars is 35 The speed of 20 cars are 45 kph The speed of 8 cars are 50…

Q: If the design speed is 80 kmph, perception reaction time 3 seconds and coefficient of friction 0.5,…

A: Given: V = 80 km/hr, Perception Reaction time, t = 3 sec and Coefficient of friction, f = 0.50…

Q: A Car rounds a 100-m radius curve at a constant speed of 60 kph. Which of the following statements…

A: As the car is travelling in curve path, there is no tangential acceleration. Due to change in the…

Q: Problem 22: A car travelling at 50 mph is 80 m from the rear side of a parked bus ahead. If the…

Q: The driver speed affects the reaction time and less affect the perception time

A: The driver speed affects the reaction and less affect the perception time : Reaction Time : One of…

Concept explainers

Intersection Design

An intersection is a location where two or more roads or railways meet or join. The traffic movement is controlled at the intersection that depends on its design and type. It governs the operation, efficiency, speed, capacity, and safety of the highways, airways, and railways. The movement of the pedestrian causes hazards and delays at the intersection.

Question

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

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

A driver on a level two-lane highway observes a truck completely blocking the highway. The driver applied the brakes and utilized the maximum longitudinal friction of 0.45 between the wet pavement surfaces and tires. The vehicle stopped only 10 m from the truck. If the driver was driving at 100 km/h, how far was she from the truck when she first observed it (assume perception-reaction time is 1.5 seconds)? How far was she from the truck at the moment the brakes were applied
A driver travelling at 50 mph sees a wall at a certain distance ahead. The driver applies the brakes immediately (perception time is 2.5 seconds) and begins slowing the vehicle at 6 m/sec^2. If the distance from the stopping point to the wall is 12 m, how far was the car from the wall upon perception?
The driver of a vehicle is following another vehicle in front of her on a two-lane highway at night. She keeps a clearance of one car length for every 4 mph of speed while she follows the lead car. However, while going downhill at 56 mph, the lead car crashes into the rear of an unlighted abandoned truck. At what speed will her car hit the wreckage? Assume a perception-reaction time is 2 seconds, a deceleration rate of 11.2 feet/sec2, the length of cars of 18 feet, and the road grade as 3%.
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.
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.
One of the two motor vehicles is moving up the ramp at 90 km / h on a road with a slope of 3%, the other goes down the ramp at a speed of 20 km / h on the opposite lane. What should be the shortest distance for two vehicle drivers to see each other in order to prevent collision by braking? The reaction time is 2.0 seconds and the sliding friction coefficient is 0.25.
Compute the total stopping sight distance (in feet) that a car moves during an emergency stop based on the following data: A. Initial velocity of car = 35 MPH B. Final velocity when it stops after 6 seconds = 0 KPH C. Slope of roadway = 2% (downhill) D. Perception-reaction time = 0.80 seconds
9.An alert driver (with a reaction time 0.5 second) is driving uphill on a 4% grade at 36 km/h on a dry pavement when suddenly a person steps from behind a parked car in the path of the driver. The coefficient of friction of the pavement is 0.7. How long is the stopping distance of the car? A. 12.73m B. 11.89m C. 21.86m D. 20.24m
COMPUTE THE MINUMUM PASSING SIGHT DISTANCE FOR THE FOLLOWING DATA: SPEED OF THE PASSING CAR = 90 KPH SPEED OF THE OVERTAKEN VEHICLE = 80 KPH TIME OF INITIAL MANEUVER = 4 SEC AVERAGE ACCELERATION = 2.4 KPH/SEC TIME PASSING VEHICLE OCCUPIES THE LEFT LANE = 9 SEC DISTANCE BETWEEN THE PASSING VEHICLE AT THE END OF ITS MENEUVER AND THE OPPOSING VEHICLE = 80 KPH
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.
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?
An automobile starting from rest speeds up to 40 meters per seconds with a constant acceleration of 4 meter per seconds square, runs at this speed for a time, and finally comes to rest with a deceleration of 5 meters per second square. If the total distance traveled is 1000 meters, find the (a) distance traveled covered during the acceleration, (b) distance traveled at constand speed, and (c) the total time of travel.