A motorist is traveling at 54 km/h when she observes that a traffic light 240 m ahead of her turns red. The traffic light is timed to stay red for 24 s. If the motorist wishes to pass the light without stopping just as it turns green again by reducing speed at constant rate, determine the speed of the car as it passes the light.

Q: . Situation: You are driving when suddenly you saw a cat crossing across the street, You applied the…

A: Given, Retardation = 8 fps^2 Braking distance S = 456 feet

Q: An automobile traveling 80km/hr has tires of 75 cm diameter. if the car is brought to a stop…

A:

Q: 1. An automobile starting from rest speeds up to 40 ft per sec with a constant acceleration of 4 ft…

A:

Q: Vehicle time headways and spacings were measured at a point along a highway, from a single lane,…

A: Head way and spacing of vehicle have been given and it has been asked to determine average speed of…

Q: A girl is walking at a straight direction with a steady speed of 0.5 meters per second. If it took…

A: step 1-

Q: The speed-density relationship of a highway is given as u= 100-0.5k where, u = speed in km per hour,…

A: given- speed density relation- u=100-0.5k

Q: The Ferris wheel turns such that the speed of the passengers is increased by at = 4t where a is in…

A:

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: Referring to the following diagram, what is the maximum constant velocity the automobile could…

A:

Q: A car is traveling at a speed of 80 f/s when the brakes are suddenly applied, causing a constant…

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Q: A child accidentally runs into the street in front of an approaching vehicle. The vehicle is…

A:

Q: For the instant represented, car A is rounding the circular curve at a constant speed of 23 mi/hr,…

A: The speed of car A is 23 mi/hr. The deceleration of car B is 4.5 mi/hr/sec. Consider the figure,

Q: a. Tests reveal that a normal driver takes about 0.75s before he or she can react to a situation to…

A: Stopping sight distance is given by, SSD=vt+v22×g×fwhere, v= velocity in ms=3060×60ms,t=reaction…

Q: Determine the braking distance (in meters) needed to reduce the speed of a bus moving uphill along…

A: initial speed=80 kmph=22.222 m/sfinal speed=40 kmph=11.111 m/sso deaceleration rate is 3…

Q: A bus initially at a bus stop accelerates continuously for a kilometer, taking a minute and a half.…

A: Data given : Intial speed(v0) = 0 m/s let acceleration = a distance(d1) = 1 km =1000m time(t1) = 90…

Q: Jazzie is driving car and was travelling at 75 km/hr in a straight road. However, the car in front…

A:

Q: A train is traveling at 60 km/hr. If its brakes give the train a constant deceleration of O.5 m/s,…

A:

Q: A motorist is traveling at 70 km/hr when he sees a traffic light in an intersection 250 m ahead turn…

A:

Q: 1. In traveling a distance of 3km between points A and a car is driven at 100kph from A to B for t…

A:

Q: You are riding home from a party and the driver is drunk. The car is traveling at 60 mi/hr.…

A: Given-Speed v=60 mi/hrReaction time t=1s

Q: The car is traveling at 48 km/h when the traffic light 90 m ahead turns yellow. The driver takes…

A: Given Data : velocity of car =48 km/h the traffic light 90m ahead turns yellow.

Q: A vehicle pulls out onto a single-lane highway that has a flow rate of 300 veh/h (Poisson…

A: Given :- Flow rate onto a single- lane highway = 300 veh/h time taken for an oncoming vehicle to…

Q: In traveling a distance of 3 km between points A and D, a car is driven at 100 km/hr from A to B for…

A:

Q: The car is traveling at 48 km/h when the traffic light 90 m ahead turns yellow. The driver 1. takes…

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

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Q: A child accidentally runs into the street in front of an approaching vehicle. The vehicle is…

A:

Q: Assuming that the distance of a freeway is 2400m, draw the time space diagram given the following…

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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 motorist is traveling at v0 = 63 km/h when she observes that a traffic light x = 448m ahead of her…

A: Given, Initial speed, Vo = 63 km/h Time the red light stays on, T = 26 s Horizontal distance of the…

Q: Vehicle time headways and spacings were measured at a point along a highway, from a single lane,…

A: Determine the flow rate in veh/hr

Q: What role does reaction time play in applying the brakes to your car in emergency situations? Assume…

A: Brief concept- Reaction time- It is the time that a person takes to apply the brakes after watching…

Q: Situation 1: A man drives his Mercedes Benz down a straight road at 5.2 km at 40 kph at which point…

A: Given:Distance traveled by the car x1=5.2 kmDistance traveled by walk x2=1.5 kmVelocity of the…

Q: A vehicle moving at a speed of 80 Km/h is slowing traffic on a two-lane highway. What passing sight…

A: Passing sight distance: The shortest range is needed on a two-lane highway at any moment for…

Q: Situation 1: Two automobiles A and B are approaching each other in adjacent highway lanes. At t = 0…

A: Using the relationxA=uAt+12aAt21000m=110kmph3.6kmphms-140sec+12aa402aA=-0.2778ms2

Q: A motorcyclist at A is traveling at 60 ft/s when he wishes to pass the truck T which is traveling at…

A: The overtaking sight distance is defined as the minimum distance to the vision of the driver of the…

Q: 11.140 A motorist starts from rest at point A on a circular entrance ramp when t = 0, increases the…

A: Given, VA = 0  Vc = 100 kmph or 27.78 m/s

Q: In a highway intersection as shown, car A is decelerating at a rate of 2 m/s² while travelling at a…

A: Relative velocity is the vector difference of the velocities of two objects. It describes the…

Q: A driver is travelling at 70mph, and spot something in the road. When the driver strikes the object…

A: Use standard formula

Q: As shown in the figure below, a motorist starts from rest at point A on a circular entrance ramp…

A:

Q: A motorist traveling at 55 mi / h down a grade of 5% on a highway observes a crash ahead of him…

A: Using the formulaSSD=vt+v22gf±G

Q: A traffic stream in a particular direction of a two lane road is moving with a constant speed of 50…

A: Given data- 2 lane road-Speed V=50 kmphAverage headway t=2.52 sTo Find-The longitudinal distance…

Q: The length of a highway is 550 m when a head-on vehicle collision occurred. Police reports show that…

A: Introduction- A field of civil engineering concerned with the design, building, and maintenance of…

Q: WA driver is travelling at 60 kph on asphalt road. An object is stopped on the road 264 ft a head…

A: Given  Speed = 60 Kph  Stopping sight distance= 264 ft  note 1 ft= 3.281 m

Q: Five vehicles are traveling the highway from Point A to Point B at constant speeds. An observer at…

A: Given: No. of Vehicles = 5 Interval period observed = 29s

Q: . The speed-density relationship of a highway is given as u = 100 -0.5k where, u = speed in km per…

A:

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

A: Free body diagram of the given problem: Given data:Speed of the car (v) = 180 km/hr = 30 m/s…

Q: A car is traveling around a circular track of 660-ft radius. If the magnitude of its total…

A:

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: 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: The length of a highway is 550 m when a head-on vehicle collision occurred. Police reports show that…

A: Given data, Speed of overtaking car u = 96 kmph = 59.65 mph Speed of overtaken vehicle Vb = 88 kmph…

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.