Traffic and Highway Engineering - With Mindtap
5th Edition
ISBN: 9781305360990
Author: Garber
Publisher: CENGAGE L
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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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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 intervals 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 vehicles passed section xx.
Also, determine (a) the time mean speed, (b) the space mean speed, and (c) the density on the highway.
3. 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 intervals 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
vehicles passed section xx. Also, determine (a) the time mean speed, (b) the space mean speed, and (c) the density on the
highway.
Ans. TMS = 40 mi/h, SMS = 38.7 mi/h, k = 31.0 veh/mi
Question 2: Traffic data has been collected by students at two sections, xx and yy, of a high way
500 m apart. Observations at xx show that six vehicles passed that section at intervals of 10, 6,
7, 7, and 5 seconds, respectively. If the speeds of the vehicles were found to be 50, 45, 45, 40, 35,
and 40 km/h, respectively.
Y
500 m
Y
1. Draw a schematic showing the locations of the vehicles 36 s after the first vehicle passed
section xx.
2. Determine the time mean speed.
3. Determine the space mean speed
4. Estimate the rate of flow on the highway
Chapter 6 Solutions
Traffic and Highway Engineering - With Mindtap
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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