What is the braking distance (ft) when the design speed is 65 mph, assuming the AASHTO recommended deceleration rate and perception-reaction time. Response Feedback: braking distance = 1.075 (v²/a)

Develop a signal timing for the intersection shown below. Assume values as necessary (provide justification on the assumptions). Level terrain Driver reaction time (t) = 1.0 s Vehicle deceleration rate (a) = 10 ft/s² Length of typical vehicle = 18 ft 375 One way PHF = 0.90 1,200 Target v/c = 0.95 Low pedestrian activity Average approach speeds: 35 mi/h WB 60 ft 40 mi/h NB Crosswalk widths = 10 ft Crosswalk setback = 2 ft 2,105 Walking speed = 4.0 ft/s NB grade = 3% WB grade = -1% l1 = e = 2.0 s 300 One way N 55 ft

. The design speed on a road is 60 kmph. Assuming the driver reaction time of 2.5 seconds and coefficient of friction of pavement surface as 0.35, the required slopping distance for two-way traffic on a single lane road is

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.

1 CE122 Anser plsss

What distance will a vehicle travel before coming to a complete stop from a speed of 70 mph, (a) When the vehicle is traveling on a level roadway with no grade, (b-1) When the vehicle is traveling uphill on a roadway of constant grade = 0.10, (b-2) If the roadway grade is not constant but starts at 0.10 uphill and decreases to 0 at a continuous rate, would the braking distance be equal to, greater than, or less than that in the case of a constant 0.10 uphill grade (briefly explain why) (c) When the vehicle is traveling downhill on a roadway of constant grade = 0.10. Assume a perception-reaction time of 2.5 seconds, and an a/g value equal to 0.35.