(PLEASE USE FIGURE 14.5 TO ANSWER THE QUESTION) A consecutive upgrade consists of two sections, the first of 2 percent grade and 5000 ft long, and the second of 6 percent grade and 5000 ft long. Trucks comprise 10 percent of traffic. And recreational vehicles comprise 6 percent. Determine:the equivalent gradethe PCEs Speed (mi/h)601%502%40-3%4%305%6%20207%8%10T235678910Length in Thousands of FeetFigure 14.5: Performance of a Typical Truck on Grades(Source: Used with permission of Transportation Research Board, National Research Council, Highway Capacity Manual, December2000, Exhibit A23-2, p. 23-30.)

Both grades span 4000 ft.Begin by dropping a vertical line from the 4000 ft mark to intersect the 2%…

Speed (mi/h) 60 1% 50 2% 40 -3% 4% 30 5% 6% 20 20 7% 8% 10 T 2 3 5 6 7 8 9 10 Length in Thousands of Feet Figure 14.5: Performance of a Typical Truck on Grades (Source: Used with permission of Transportation Research Board, National Research Council, Highway Capacity Manual, December 2000, Exhibit A23-2, p. 23-30.)

Speed (mi/h) 60 1% 50 2% 40 -3% 4% 30 5% 6% 20 20 7% 8% 10 T 2 3 5 6 7 8 9 10 Length in Thousands of Feet Figure 14.5: Performance of a Typical Truck on Grades (Source: Used with permission of Transportation Research Board, National Research Council, Highway Capacity Manual, December 2000, Exhibit A23-2, p. 23-30.)

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter3: Characteristics Of The Driver, The Pedestrian, The Bicyclist, The Vehicle, and The Road

Section: Chapter Questions

Problem 25P

See similar textbooks

Similar questions

Q1) Choose the correct answer.. 1-The first stage in traffic engineering studies is.. A. Traffic volume studies B. Spot speed studies C. Speed and delay studies D. Origin and destination studies 2.For the movement of vehicles at an intersection of two roads, without any interference, the type of grade separator generally preferred to, is A. Partial Cloverleaf B. Trumpet C. Diamond Interchange D. Full Cloverleaf 3. Pick up the incorrect statement from the following.. A. The speed on urban roads 120-130 km/hr. B. There is no control on the urban roads Access. C. The urban roads are use for long distance. D. Level of service for urban roads A and B. 4. The main objective of traffic volume studies.. A. To decide priority for improvement of roads. B. For geometric design. C. For computing roadway capacity. D. To plan traffic operation. 5. The minimum space headway increases with A. Increase in length of vehicle. B. Increase in width of vehicle. C. Increase in weight of vehicle. D. Increase…
ANAS Pic 3: Street View at Point B to Point C Pic 4: Street View at Point C to Point D 4 of 5 ||
QUESTION 5 What is the brake reaction distance (ft) when the design speed is 55 mph, assuming the AASHTO recommended deceleration rate and perception-reaction time.
A road with 5.6% upward grade and speed 100kmph. If coefficient of longitudinal friction 0.33 and driver reaction time was 1.8sec, find the stopping sight distance available. A BI = E B $$ P * US X₂ x² = E E # #I CX
The table below represents data that was observed and collected on a given roadway. 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 Speed 0-10 Range (km/h) 10 40 50 29 a) Design Speed (98th Percentile b) Upper Safe Speed (85th Percentile) c) Lower Safe Speed (15th Percentile) 150 250 300 90 90 90-100 20 Using the abovementioned collected data, compute the following and show all necessary steps and units:
How much time (in seconds) does a person traveling on a grade of -1% at a speed of 69 mph have to hit the brakes to stop before hitting a monster seen in the middle of the road 970 feet away? Assume the practical stopping distance equation and the AASHTO standards for unspecified variables apply.
Calculate the minimum passing sight distance required for a two-lane rural highway that has a posted limit of 72 kph. The local traffic engineer conducted a speed study of the subject road and found the following: Average speed of passing vehicle= 76 kph Average acceleration of passing vehicle= 2.3 kph/sec Average speed of impeder vehicles= 64 kph Show complete solution. Need ASAP. Thank you.
A driver hit a pedestrian resulting in minor injuries. He was claiming that he followed the posted design speed at 80 kph (running speed368 kph) and perceived the design speed wasn't correct. Investigate the engineer's claim. (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 the pedestrian 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
A driver hit a pedestrian resulting in minor injuries. He was claiming that he followed the posted design speed at 80 kph (running speed=68 kph) and thought the design speed was not correct. Investigate the engineer's claim. (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 the pedestrian 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
Read the question carefully and give me all right solutions. A 1.36-ton passenger car with front cross-sectional area of 3.4 m2 wastraveling at a speed of 105 km/hr on a smooth pavement. Determine:a. The horsepower required to maintain speed on a straight and levelroadb. The horsepower required to maintain speed as the vehicle travels up a5% gradec. The horsepower required to maintain speed as the vehicle traversesonto a horizontal curve of 305 m radius
Question 5a) As the Area Engineer of Ghana Highway Authority, a lot a complains from drivers and passengers have come to you concerning an uncomfortable weight loss sensation usually experienced at a particular sag curve. You have therefore been tasked to redesign this sag curve to eliminate the weight loss sensation. How would you achieve this objective?
Accident Reconstruction, given information: Average Skid Mark = 47 feet • Crash damage indicates 30 mph speed at impact %3D • f = 0.65 • level roadway • 40 mph posted speed What is the initial speed of the vehicle?