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

Q: 1. On a two lane and two-way roadway vehicle-A is travelling at the design speed of 90 km/h.…

A:

Q: Problem 1.3. Calculate the minimum non-passing sight distance on a highway at a descending gradient…

A: Given data, Gradient on highway,s= 6% Design speed =V= 80kmph Reaction time= t= 2.5s f= 0.4 Find out…

Q: An inexperienced driver of an all-wheel drive car applies too much throttle in an attempt to…

A: To find vehicle acceleration

Q: Determine the braking distance downhill and the percent grade of the highway at that section of the…

A: Velocity (V)= 55 mph Coefficient of friction = 0.30lets say breaking distance when driving uphill =…

Q: 2. A vehicle (SUV) is to overtake a bus as it enters an acceleration lane. The speed of the SUV is…

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Q: A distracted driver is travelling at 65mph on a roadway with an upgrade of 4% before he finally…

A: Given, Initial speed, Vi = 65 mph or 95.33 ft/s Grade, G = 4% or 0.04 Rolling resistance factor, frl…

Q: A car braked with a constant deceleration of 16 ft/sec^2, producing skid marks measuring 200 ft…

A: ASKED: To determine the speed of the car before the application of brakes.   Given, Constant…

Q: The 5-Mg truck and 2-Mg car are traveling with the free-rolling velocities of 37 km/h and 13 km/h,…

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Q: Cars are traveling on level terrain at 64 mph on a road with a coefficient o sion of 0.8. The driver…

A: Give data Velocity of car = 64 mph or miles/hr  Coefficient of adhesion = 0.8  Reaction time of…

Q: A driver is traveling 70 mi/hr on a road with a -2% downgrade. The driver's vehicle has a braking…

A: speed V = 70 mi/hr Grade G = -2% braking efficiency = 90% Stopping sight distance = 500 ft lateral…

Q: One vehicle is following another on a two lanes, two way highway at night, according to the rule of…

A: One car length of clearance Perception reaction time Coefficient of braking friction Length of…

Q: Determine the safe stopping speed distance for a design speed of 14 m/s for two- way traffic on a…

A: Given data- Design speed V=14 m/s, 2-way traffic on 2 lane road, Coefficient of friction f=0.28,…

Q: Question An engineer has designed a road with a curve of radius 12 m. The material of the road…

A: Given- Radius of curve R=12 m, coefficient of friction =0.3, It is needed to find the maximum…

Q: A car follows a slow moving truck (travelling at a speed of 10 m/s) on a two-lane two-way highway.…

A: Given data: A car follows a truck moving with speed, u = 10 m/s Distance maintain between then, s =…

Q: A vehicle travelling on two way two lane roadway with average speed (70.0) Km/hr., maneuver to pass…

A: Given data, Passing speed u = 70 kmph Time of initial maneuver t1 = 3.5 sec Average acceleration a =…

Q: 2.32 A driver is traveling at 52 mi/h on a wet road. An object is spotted on the road 415 ft ahead…

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Q: A 2400-lb vehicle (CD 0.38, Af = 26 ft², and p = 0.002378 slugs/ft³) is driven on a surface with…

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Q: A 2000-kg airplane lands on a runway with 9% grade with a touchdown speed of 130km/h, where tihe…

A:

Q: A driver with a reaction time of 2.0 second is driving downhill on a 2% grade when suddenly a cat…

A:

Q: A student trying to test the braking ability of her car determined that she needed 19.5 ft more to…

A: The given data is shown below: Distance=19.5 ftGrades=5% and 3.5%

Q: A car follows a slow moving truck (travelling at a speed of 10 m/s) on a two-lane two-way highway.…

A:

Q: 2. A driver traveling down a 4% grade collides with a roadside object. The roadway has a posted…

A:

Q: 2. The driver of a car, applied brakes and barely avoided hitting an obstacle on the road. The…

A: Skid length L=25 m, Speed V=55 km/h, Coefficient of friction f=0.5, Reaction time t=2.5 s, To Find-…

Q: The rated speed of a highway curve of 80 m radius is 30 mph. If the coefficient of friction between…

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Q: A driver is driving uphill on a (3% grade) at (60 km/hr.) speed, if the reaction (perception +…

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Q: Refer to the following illustration; veh#2 is driving with the speed of 60mph, following veh#1 whose…

A: Speed of vehicle 1, Speed of vehicle 2, Distance, Level grade.To find: Minimum distance between two…

Q: eeded 19.5 ft more to stop her car when driving downhill on a gment of 5% grade than when driving…

A: Given:- road segment of 5% grade  another segment=3.5% grade To find:- speed

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

A: According to given data  A driver on a level two-lane highway observes a truck completely blocking…

Q: car is traveling up a 3% grade, with the speed of 85mph, on a road that has good, wet pavement. A…

A: Gradient = +3% Initial speed, vo = 85mph = [85 x 1.467] ft/sec Total distance covered in brake…

Q: A vehicle (A) of weight 20 kN skids through a stretch of 40 m before colliding with a parked vehicle…

A:

Q: stopped in a distance of 16.1m. if the coefficient of friction between the tires and the road

A: Given data - Velocity (V)  = 50km/hr = 50×(5/18) = 13.88m/s Braking distance = 16.1 m Coefficient of…

Q: A student tying to test the braking ability of his car determined that he needed 10 m more to stop…

A:

Q: Two drivers each have a reaction time of 2.5 seconds. One is obeying a 90 km/h speed limit, and the…

A: Reaction time of both the observer = 2.5 sec Velocity of car ( obeying speed ) = 90 km/h Velocity of…

Q: A car is approachin an intersection with velocity 35 mph. When the car is at a distance of 200 ft…

A: Given Data: Velicity= 35mph.Distance = 200ftDrivers reaction time = 1.5sGrade of the road surface…

Q: A driver travelling at 55 mph sees a wall at a certain distance ahead. The driver applies the break…

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Q: On a single directioned and 5% graded descending highway section, a vehicle is moving with a…

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Q: The design speed on a road is 60kmph. Assuming the driver reaction time of 2.5 seconds and…

A: Given- Speed V=60 kmphreaction time t=2.5 sf=0.352-way traffic on single lane.It is needed to find…

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.