Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Question
Chapter 6, Problem 23P
To determine
The expected number of accepted gaps that will be available for minor road vehicles during the peak hour.
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the following data were taken on five vehicles travelling consecutively 1.5km portion of the NLEX.
Vehicle Time(minute)
1
1.2
2
1.0
3
1.4
4
1.3
5
1.1
Determine the density of traffic in (Veh per km)
3.33
3.83
4.33
2.83
The following figure shows the Level of Service (LOS) criteria for a multilane highway segment. If the free
flow speed is 45 mph and the analysis flow rate is 1800 passenger cars per hour per lane (pc/h/In). What is
the actual speed and density of the traffic flow at this specific location? What is the LOs of the location?
70
free-flow Seed 60 mih
56 mi
50 mih
45 mih
LOS A
60
50
40
30
20
pomit
45
400
800
1200
1600
2000
2400
Flow Rate (pc/h/in)
(uju) paads eg-buasseg abeany
The traffic from a suburban area to a city uses the following five shorter routes, as shown
below.
Access from
Suburban
Route 4
Route 1
Route 5
Route 2
Route 3
Access to
City
The models below show the travel time as a function of traffic flow on each route.
t₁ = 18 + 4.5 x₁
t₂ = 21+ 7.0 x₂
t3 = 26 +
4.9 x3
t4 = 29+
3.4 x4
t5 = 34 + 0.3 x5
Where: t; is travel time on route 'i' (in minutes) and x; is traffic flow on route 'i' (in 1000
vehicles).
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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