Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Question
Chapter 6, Problem 2P
To determine
(a)
Density on the highway.
To determine
(b)
The flow on the road.
To determine
(c)
Space mean speed.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Data obtained from aerial photography showed six vehicles on a 600 ft – long section of road.
Traffic data collected at the same time indicated an average time headway of 4 sec. Determine (a)
the density on the highway, (b) the flow on the road, and (c) the space mean speed.
Data obtained from aerial photography showed six vehicles on a 200 metre long section of road. Traffic data collected at the same time indicated an average time headway of 4 sec. Determine (a) the density on the highway, (b) the flow on the road, and (c) the space mean speed.
2. Data obtained from aerial photography showed six vehicles on a 600 ft – long section of road. Traffic data collected at the
same time indicated an average time headway of 4 sec. Determine (a) the density on the highway, (b) the flow on the road,
and (c) the space mean speed.
Ans. k = 52.8 veh/mi, q = 900 veh/h, SMS = 17.0 mi/h
Chapter 6 Solutions
Traffic and Highway Engineering
Ch. 6 - Prob. 1PCh. 6 - Prob. 2PCh. 6 - Prob. 3PCh. 6 - Prob. 4PCh. 6 - Prob. 5PCh. 6 - Prob. 6PCh. 6 - Prob. 7PCh. 6 - Prob. 8PCh. 6 - Prob. 9PCh. 6 - Prob. 10P
Ch. 6 - Prob. 11PCh. 6 - Prob. 12PCh. 6 - Prob. 13PCh. 6 - Prob. 14PCh. 6 - Prob. 15PCh. 6 - Prob. 16PCh. 6 - Prob. 17PCh. 6 - Prob. 18PCh. 6 - Prob. 19PCh. 6 - Prob. 20PCh. 6 - Prob. 21PCh. 6 - Prob. 22PCh. 6 - Prob. 23PCh. 6 - Prob. 24PCh. 6 - Prob. 25PCh. 6 - The arrival times of vehicles at the ticket gate...Ch. 6 - Prob. 27P
Knowledge Booster
Similar questions
- Data obtained from aerial photography showed nine vehicles on a 720 ft-long section of road. Traffic data collected at the same time indicated an average time headway of 4.2 sec. Determine the following. (a) the density on the highway (in veh/mi) veh/mi (b) the flow on the road (in veh/h) veh/h (c) the space mean speed (in mi/h) mi/harrow_forwardData obtained from aerial photography showed six vehicles on a 180m long section of road. Traffic data collected at the same time indicated an average time headway of 4 sec. Determine a)density on the highway b)flow on the road c)space mean speedarrow_forwardPlease solve and explain step by step, thank youarrow_forward
- Question 7 Data obtained from aerial photograph showed eight vehicles on 200 m long section of road. Traffic data collected at the same time indicated an average time headway of 3 sec. Determine: a) the density on the road b) the flow on the road c) the speed What type of speed is this? Explain.arrow_forwardTwo sets of students are collecting traffic data at two sections, xx and yy, of a highway 1500 ft apart. Observations at xx show that five vehicles passed that section at inter- vals of 3, 4, 3, and 5 sec, respectively. If the speeds of the vehicles were 50, 45, 40, 35, and 30 mi/h, respectively, draw a schematic showing the locations of the vehicles 20 sec after the first vehicle passed section xx. Also determine (a) the time mean speed, (b) the space mean speed, and (c) the density on the highway. 6-3arrow_forwardThe following data was collected from a lane when the highway was operating at capacity. Spot speeds (mph): 25, 30, 32, 35, 28, 35, 26, 29, 30, 34. Time Headways (sec): 2, 2, 1, 2, 3, 1.5, 2.5, 1.5, 2.5 what is the 85th percentile speed? Space mean speed(mph)? Jam density(veh/mi)? Capacity of the hwy lane?arrow_forward
- A traffic engineer was analyzing traffic operations of Route 44 during 4:30 – 5:30 p.m. He observed the hourly volume of traffic is 1200 vehicles per hour (vph) with a PHF (Peak Hour Factor) of 0.8. It is known that the peak period occurred from 5:15 – 5:30 p.m. Determine the number of vehicles the traffic engineer would count from 4:30 – 5:15 p.m. A. 750B. 660C. 575D. 825arrow_forwardA flow characteristic that is related to the density and obtained from speed data is occupancy. Data obtained from a 6-ft by 6-ft inductive loop detector is used to determine the traffic density. With an occupancy of 9.375%, determine the density, in vehicles per mile, for a mean vehicle length of 27 feet.arrow_forwardTwo set of students are collecting traffic data at the two sections A and B 300 meters apart long a highway . Observation at A shows that 5 vehicles pass that section at intervals of 9 sec , 10 sec, 11 sec, 13 sec, and 15 sec respectively. If the speed of the vehicles were 84, 76, 68, 60 and 52 kph, compute the time mean spee (kph), space mean speed (kph), density of the highwayarrow_forward
- Studies have shown that the traffic flow on a two-lane road adjacent to a school can be described by the Greenshields model. A length of 0.5 mi adjacent to a school is described as a school zone (see Figure 6.19) and operates for a period of 30 min just before the start of school and just after the close of school. The posted speed limit for the school zone during its operation is 20 mi/h. Data collected at the site when the school zone is not in operation show that the jam density and mean free speed for each lane are 118 veh/mi and 63 mi/h. If the demand flow on the highway at the times of operation of the school zone is 95% of the capacity of the highway, determine: 6-13 (a) The speeds of the shock waves created by the operation of the school zone (b) The number of vehicles affected by the school zone operation (c) The time the queue takes for it to dissipate after the operation of the school zonearrow_forwardNonearrow_forwardHighway Engineering: Theory of Traffic Flowarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Traffic and Highway EngineeringCivil EngineeringISBN:9781305156241Author:Garber, Nicholas J.Publisher:Cengage Learning
Traffic and Highway Engineering
Civil Engineering
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Cengage Learning