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Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Question
Chapter 6, Problem 3P
To determine
(a)
A schematic diagram is to be drawn showing the locations of the vehicles 20 sec after the first vehicle passed section XX and the time mean speed.
To determine
(b)
Space mean speed.
To determine
(c)
Density on the highway.
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Students have asked these similar questions
Two 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.
6-3
Two sets of students are collecting traffic data at two sections, xx and yy, of a highway 500 metre apart. Observations at xx show that five vehicles passed that section at intervals of 3, 4, 3, and 5 secs, respectively. If the speeds of the vehicles were 50, 45, 40, 35, and 30 km/hr., 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.
Two sets of students are collecting traffic data at two sections, xx and yy, of a highway 1,200 ft apart. Observations at xx show that five vehicles passed that section at intervals of 3, 4, 3, and 5 sec, respectively. If the speeds of the vehicles were 55, 50, 45, 40, and 35 mi/h, respectively, determine the space mean speed (in km/h) for the data using the following equation where
ut
and
us
are in km/h. (Round your answer to at least three significant figures.)
ut = 0.966us + (3.541 km/h)
km/h
Determine the space mean speed (in km/h) for the data using the following equation. (Round your answer to at least three significant figures.)
us =
n
n
1
ui
i=1
km/h
Compare your answers and discuss the results.
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
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Similar questions
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- solve the problem given in image. please solve it completely.arrow_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_forward1. A study of speed-flow-density relationships at a particular site has resulted in the following calibrated equation and graph 1:- (a) Assuming a linear relationship, derive the equations depicting the relationship between flow and density and speed and flow, for this site. (b) How long will it take for the last vehicle queued during the red phase to clear once the light turns green? Speed km/h 80.0 70.0 60.0 50.0 40.0 30.0 20.0 10.0 0.0 0 20 ū = 71.2 (1-122) Speed vs Density Curve 40 80 60 Density veh/km GRAPH 1 100 120 140arrow_forward
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