A driver of a car applied the brakes and barely avoided hitting an obstacle on a roadway section which has a 5 percent gradient. The vehicle left skid marks 26 meters. Assuming that the coefficient of friction is 0.6 and the driver was travelling down the grade; determine whether the problem was the speed limit of 70kph on the section or driver violation of the speed limit.

Q: What is the safe stopping distance for a section of rural freeway with a design speed of 80 mi/h and…

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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: What is the SSD of a driver/vehicle traveling at 40 mph along a 5% uphill? Assume general braking…

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Q: A vehicle weighing 2000-lb is traveling 30 mph at 5% upgrade with rate of 6 ft/sec². The vehicle has…

A: solution: Given: vehicle weight = 2000 lb. speed = 30 mph grade = +5% acceleration rate = 6ft/sec2…

Q: The design speed of vehicle is 100 kph. Assume total reaction time = 4 sec. co-efficient of friction…

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Q: The car's braking distance from a velocity of v= 96 km/hr is 45 m on a level pavement. Assuming that…

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Q: A one lane loop ramp at the northwest quadrant of an interchange, this loop ramp is for northbound…

A: Given- Friction factor f=0.095, Design speed V=35 mph, Radius R=545 ft,

Q: A two-lane minor road intersects a two-lane undivided major road at 90 degrees, forming a four-leg…

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Q: A standard HL-93 Truck impends to overturn on a super elevation highway curve at a speed if 120 mph.…

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Q: Question The free mean speed of a roadway is 60 kmph. Under the stopped condition, the average…

A: Free mean speed Vf=60 kmph, Spacing s= 8 m,

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.