Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Question
Chapter 8, Problem 7P
To determine
Whether the intersection meets MUTCD Warrants 1, 2 and 3 for signalization and to explain the way the warrant was met.
Expert Solution & Answer
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Students have asked these similar questions
Please calculate the level of service and delay for the westbound left lane group, the westbound approach, and the whole intersection. I provided LOS chart for reference.
3. Check whether the following 4-way intersection with the two minor streets controlled by
"STOP" sign needs to be signalized using warrants:
Annual crashes:
●
5 right angle with injuries
6 left-turn with major injuries
3 rear end (PDO)
4 pedestrian crashes with 2 major injuries)
Traffic data
Time
5-6 am
6-7 am
7-8 am
8-9 am
9-10 am
10-11 am
11 - 12 n
12-1 pm
1-2 pm
2-3 pm
3-4 pm
4-5 pm
5-6 pm
6-7pm
7-8 pm
8-9 pm
Main Street Volume
(veh/hr)
EB
450
555
625
575
490
550
565
590
480
565
575
600
675
550
450
400
WB
440
525
575
560
460
490
540
545
420
490
515
550
595
490
390
350
Minor Street Volume
(veh/hr)
NB
50
100
120
90
80
90
95
100
85
100
110
135
105
80
55
SB
60
75
115
125
100
95
98
100
110
95
115
130
150
110
80
60
Pedestrian Volume (Ped/Hr),
Crossing the Main
20
85
135
145
120
110
105
125
135
95
85
110
155
140
100
60
What is the first area of the temporary traffic control zone?
O Maintenance Area
Advanced Warning Area
O Transition Area
O Activity Area
Which of the following is not a factor in determining the spacing of channelized devices?
The number of through lanes
The type of channelizing device
The location of the devices
Speed limit
Which of the following is NOT a type of taper?
Lane Shift
Lane Closure
Merging
Downstream
Two-Lane One-Way Tapers are use.
O When the work vehicles can safely park on the side of the road
O On one-way roadways
For special events only
O When flaggers are present
Chapter 8 Solutions
Traffic and Highway Engineering
Ch. 8 - Prob. 1PCh. 8 - Prob. 2PCh. 8 - Prob. 3PCh. 8 - Prob. 4PCh. 8 - Prob. 5PCh. 8 - Prob. 6PCh. 8 - Prob. 7PCh. 8 - Prob. 8PCh. 8 - Prob. 9PCh. 8 - Prob. 10P
Ch. 8 - Prob. 11PCh. 8 - Prob. 12PCh. 8 - Prob. 13PCh. 8 - Prob. 14PCh. 8 - Prob. 15PCh. 8 - Prob. 16PCh. 8 - Prob. 17PCh. 8 - Prob. 18PCh. 8 - Prob. 19PCh. 8 - Prob. 20PCh. 8 - Prob. 21PCh. 8 - Prob. 22PCh. 8 - Prob. 23PCh. 8 - Prob. 24PCh. 8 - Prob. 25PCh. 8 - Prob. 26PCh. 8 - Prob. 27PCh. 8 - Prob. 28P
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- An intersection has a three-phase signal with the movements allowed in each phase and corresponding analysis and saturation flow rates shown in the table below. Assume the lost time is 4 seconds per phase and a critical intersection v/c of 0.90 is desired. O 15.552 sec O 11.462 sec O 14.825 sec Phase O 16.065 sec Allowed movements Analysis flow rate Saturation flow rate Using v/c equalization ratio, calculate the effective green time for phase 3 1 NB L, SB L 330, 365 veh/h 1700, 1750 veh/h 2 NB T/R, SB T/R 1125, 1075 veh/h 3400, 3300 veh/h EB L, WB L 110, 80 veh/h 650, 600 veh/h 3 EB T/R, WB T/R 250, 285 veh/h 1750, 1800 veh/harrow_forwardQ5a. Otwebeweate has been selected as the capital of a newly created district. As the new District Engineer, the Chief and the elders of the town approach you and make a request for the installation of a traffic light at one of the key intersections with the reason that there is no single traffic signal in the town and the installation of one will lift the status of the town as a district capital. What will be your decision and how will you explain it to the Chief and eldersarrow_forwardFind: A- the total hourly volume B- PHF C-flow rate Density Q3) A- List the Importance of Spot Speed Studies.. B- Explain pedestrian control devices..arrow_forward
- Task 3: The Intersection design a. Describe the various principles involved in the design of at-grade intersections and the different types of at-grade intersections. Also, give an example of an appropriate location for the use of each type. b. Design a suitable signal phasing system and phase lengths for the intersection using the Webster method. Show a detailed layout of the phasing system and the intersection geometry used for the geometric and traffic characteristics shown in table 6 below. And the saturation flow of the intersection is shown in table 7 Discuss the effect of increasing saturation flow rates by 10% higher on the cycle length? Table 6:The geometric and traffic characteristics of the intersection Approach (Width) North (56m) South (56 m) East (68m) West (68m) Peak hour approach volumes Left turn 133 73 168 134 Through movement 420 373 563 516 Right turn 140 135 169 178 Conflicting pedestrian volumes 900 1200 1200 900 PHF 0.95 0.95 0.95 0.95…arrow_forwardAn intersection has a three-phase signal with the movements allowed in each phase and corresponding analysis and saturation flow rates shown in the table below. Assume the lost time is 4 seconds per phase and a critical intersection v/c of 0.90 is desired. O 20.464 sec O 22.411 sec O 24.460 sec Phase O 21.035 sec Allowed movements Analysis flow rate Saturation flow rate Using v/c equalization ratio, calculate the effective green time for phase 2 NB L, SB L 330, 365 veh/h 1700, 1750 veh/h 2 NB T/R, SB T/R 1125, 1075 veh/h 3400, 3300 veh/h EB L, WBL 110, 80 veh/h 650, 600 veh/h 3 EB T/R, WB T/R 250, 285 veh/h 1750, 1800 veh/harrow_forwardThe details of a 12-hour volume study for a 4- leg road junction are tabulated below. The N-S major road has two through lanes on each approach while the E-W minor road has one through lane on each approach. Examine the fulfilment of traffic signal Warrants 1 (Condition B) using the MUTCD 2009 standards. Minor Rd. (Higher Major Rd. (Total of approaches) Hour Start approach) Hr 1 Hr 2 Hr 3 734 98 880 122 850 120 Hr 4 955 100 Hr 5 941 105 Hr 6 915 95 Hr 7 1040 140 Hr 8 1010 150 Hr 9 790 156 а. W1B is not met b. W1B is metarrow_forward
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