A driver hit a pedestrian resulting in minor injuries. Hewas claiming that he followed the posted design speedat 80 kph (running speed368 kph) and perceived thedesign speed wasn't correct. Investigate the engineer'sclaim. (Prove by computation)a.) Was the driver's claim correct?b.) If yes, what should be the posted design speed?If not, what might be the other reasons for thepedestrian accident?Accident Report:- Driver was able to see the pedestrian 80 m ahead- Coefficient of friction 0.4- Grade of the highway is zero- Time of accident: 8 AM- Weather condition: Fair- skid marks were not clear

Answered: was claiming that he followed the…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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length-6.2m, reaction time-1.5 sec and lane capacity-800 veh./hr. CH:5 Problem 4: Find the maximum limited speed (km/hr) for the vehicle with length=6.2m, reaction time-1.5 sec and lane capacity-800 veh./hr. 1000 V ( C=; 1(0.28 Vaf+0.01 V2)+L ) ক। 1000 V 800D (0.20 V 1.5+0.01 V2)+6.2 620 2 - 83V +d =0 -btvb-4ac-(-83)/(-83)2-4+1•600 V: 2a 201 Problein S In unequal crest vertical curve, a grade (gl of +3 % intersects g2 of-2.4%) at a vertex (PI) whose elevation is 405.38m and (PC) Station is (16+00). A 700m vertical curve is to be extended back from the vertex, and a 500m vertical curve forward to closely fit ground conditions. Compute and tabulate the curve for stakeout at full (100m) stations. Elev. 405.38 PI g2-2.49% .75% PC 26+00 700m 500m :-
The breaks are set on a train running at 30 mi/hr.,when ½ miles from a station. The train slows downuniformly, coming to rest at the station. Find theacceleration, and time elapsed in stopping.
Compute the headlight sight distance for a freeway with a design sped of 80kph. Assume time perception to be 3.0 seconds and skid resistance to be 0.45. Use 50% efficiency.
A Ford Everest skidded into a intersection of Maharlika Highway and Circumferential Road and struck a bystander and continued until it hit one of the electrical post of the highway. Based on the damage to the front of the Everest, the police report estimated that the car was doing 8 kph at the moment of impact on the electrical post. The length of the skid marks was recorded to be 40 m. The road has down hill grade of 5% A test car skidded 14 m. on the same section of the road when the brake is applied from a speed of 40 kph to the halt. Determine the probable speed of the car involved in the accident when the brakes where applied in kph?
I1
Define The anticipated driving conditions
find the total distance that a car travelled from the time the driver saw the hazard when he was at 75kph. the average skid resistance is 0.60
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6. JA driver with 20/20 vision traveling at 55 mph in the median lane desires to exit the free- way at the exit ramp. If 5-in. letters are used, what is the minimum distance the sign should be placed ahead of the ramp exit? (Some assumptions that would be helpful are perception- reaction time = 2 sec; exit speed = 30 mph; deceleration rate 20/20 vision can read a sign at 55 ft per inch of letter height.) Discuss your results. 4.80 ft/s 2; a driver with
10-25. In preparation for a public hearing on a proposed interstate bypass at Non- troppo, Michigan (Figure P-10-25a), the County Road Commission has re- quested that you prepare an estimate of the potential for violation of FHA noise standards 75 m from the interstate. The city engineer has supplied sketch maps (see Figure P-10-25b) and data summary for your use. Data for 1-481 at Pianissimo Avenue Estimated traffic: Automobiles: 7,800 per hour at 88.5 km/h Medium trucks: 520 per hour at 80.5 km/h Heavy trucks: 650 per hour at 80.5 km/h Roadway configuration: Depressed Section length: 857.25 m east and 857.25 m west of center line of Pianissimo Avenue Assume that the receiver is located on the center line of Pianissimo Avenue 75.00 m from the center line of 1-481. Answer: L₁ at observer = 68.6, or 69, dBA

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was claiming that he followed the posted design speed at 80 kph (running speed%-68 kph) and perceived the design speed wasn't correct. Investigate the engineer's claim, (Prove by computation)