Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 3, Problem 13P
To determine
Horsepower developed by a passenger car.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Determine the horsepower developed by a passenger car traveling at a speed of 60 mph on an upgrade of 4% with a smooth pavement. The weight of the car is 4500 lb and the cross-sectional area of the car is 45 ft2.
Determine the horsepower developed by a passenger car traveling at a speed of 50-mi/h on an upgrade of 5% with a smooth pavement. The weight of the car is 4,500-lb and the cross-sectional area of the vehicle is 50 square-feet. Repeat this for a 24,000-lb truck with cross-sectional area of 100 square-feet and coefficient of drag of 0.5 traveling at 55-mi/h.
1. The driver of a vehicle traveling at 80 kph up a grade requires 9 m less to stop after he applies
the brakes than the driver travelling at the same initial speed down the same grade. If the
coefficient of friction between the tires and pavement is 0.50, what is the percent grade and
what is the braking distance down the grade.
V,=80 kph
V2=0
brakes are
applied
S-9
V,=80 kph
V2=0
brakes are
applied
-S-
Chapter 3 Solutions
Traffic and Highway Engineering
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- 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 radiusarrow_forwardIII. Determine the horsepower produced by a passenger car travelling at a speed of 68 mi/hr on a radius of curvature of 1,200 ft road of 4% grade with a smooth pavement. Assume the weight of the car is 4500 lb and the cross sectional area of the car is 45 ft².arrow_forwardThe braking distance of a car from 90 km/h is 40 m assuming the pavement is level. (a) if the pavement is with 5° inclination, what will be the braking distance (in meter) of the car going up from 90km/h? (b) and if the car is going down at 6% inclination, what is its braking distance (in meter) from 90km/h? Note: Assume the breaking force is not dependent of the grade. Select the correct response(s): O 42.71 O 45.78 O 52.34 O 43.25 O 54.12 O 46.77 O 34.30 O 36.05 O 44.13 O 40.95 O 41.96 O 50.90 O O O O O O O O Oarrow_forward
- 10.11 A single lane highway is having a design speed of 65 km/h and the pavement is having a friction coefficient of 0.4. If the reaction time of drivers is taken as 2.5 sec and average length of vehicles as 5 m, calculate the allowable capacity of the highway.arrow_forwardA 1000kg car rounds a curve on a flat road of radius 50m at a speed of 50kph. Compute the maximum coefficient of friction must the pavement have to prevent the car from sliding?arrow_forwardThe driver of a vehicle saw a stray dog 40 meters away and decided to hit the brakes instantaneously. If the distance of the vehicle from the dog is 15 meters after the vehicle had stopped, what is the average skid resistance of the pavement if the vehicle is travelling at a speed of 65 kph?arrow_forward
- The braking distance of a car from 90 km/h is 40 m assuming the pavement is level. (a) if the pavement is with 5° inclination, what will be the braking distance (in meter) of the car going up from 90km/h? (b) and if the car is going down at 6% inclination, what is its braking distance (in meter) from 90km/h? Note: Assume the breaking force is not dependent of the grade.arrow_forwardCalculate the average skid resistance of the pavement surface when a vehicle travelling at a speed of 35 kmph was stopped by applying brakes fully? (Assume the skid marks were 6 m in Length.)arrow_forwardA vehicle moving at 65 kmph speed was stopped by applying brake and the length of skid mark was 25.50 m. If the average skid resistance of the pavement surface is known to be 0.70, determine the brake efficiency of the test vehicle.arrow_forward
- The radius of a horizontal circular curve on a highway is 120 m. The design speed is 60 km/hour, and the design coefficient of lateral friction between the tyre and the road surface is 0.15. The estimated value of superelevation required (if full lateral friction is assumed to develop), and the value of coefficient of friction needed (if no superelevation is provided) will, respectively, be A B C 1 11.6 1 10.5 1 11.6 and 0.10 and 0.37 and 0.24arrow_forwardEstimate the horsepower required to accelerate a 2,500-lb vehicle traveling 30 mph up a 5% grade at the rate of 6 ft/sec². The vehicle has a frontal cross-sectional area of 20 ft2. The roadway has a straight alignment and a badly broken and patched asphalt surface Assume the drag coefficient = 0.3 and a rolling resistance =34 Use the following: (a) Inertia resistance, F, =? (compute) (b) Grade resistance, F =? (compute) (c) Rolling resistance, F, = 34 lb (d) Curve resistance, F = 0 (e) Air resistance; Use the formula :F= 0.0006AV² (f) Horsepowerarrow_forwardA car traveling at 45 mph on a poor, wet pavement has a braking efficiency of 87%. The brakes were applied 100 feet before hitting an obstacle in the road. The road is uphill for 40 feet and then is level for the remainder of the way. The car had a maximum coefficient of road adhesion in the sloped portion of the poor, wet roadway and but as soon as it started going on the level portion its coefficient of road adhesion reduced to 0.3. Assuming that the car struck the obstacle at 30 mph, what was the grade of the hill? Assume practical stopping distance equation applies.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Structural Analysis (10th Edition)Civil EngineeringISBN:9780134610672Author:Russell C. HibbelerPublisher:PEARSONPrinciples of Foundation Engineering (MindTap Cou...Civil EngineeringISBN:9781337705028Author:Braja M. Das, Nagaratnam SivakuganPublisher:Cengage Learning
- Fundamentals of Structural AnalysisCivil EngineeringISBN:9780073398006Author:Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel LanningPublisher:McGraw-Hill EducationTraffic and Highway EngineeringCivil EngineeringISBN:9781305156241Author:Garber, Nicholas J.Publisher:Cengage Learning
Structural Analysis (10th Edition)
Civil Engineering
ISBN:9780134610672
Author:Russell C. Hibbeler
Publisher:PEARSON
Principles of Foundation Engineering (MindTap Cou...
Civil Engineering
ISBN:9781337705028
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Cengage Learning
Fundamentals of Structural Analysis
Civil Engineering
ISBN:9780073398006
Author:Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:McGraw-Hill Education
Traffic and Highway Engineering
Civil Engineering
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Cengage Learning