Traffic And Highway Engineering
5th Edition
ISBN: 9781133605157
Author: Garber, Nicholas J., Hoel, Lester A.
Publisher: Cengage Learning,
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 7, Problem 23P
To determine
The additional consideration that should be given to the sight distance for the design vehicle crossing the intersection.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
QUESTION 3
What is the intersection sight distance (ft) needed at a yield controlled intersection for a passenger car to turn left onto a 2-
way, 2-lane road with a design speed of 50 mph?
[round to the nearest foot]
A signalized intersection approach has an upgrade of 4%. The total width of the cross street is 60 ft. The avg. vehicle length is 16 ft. Traffic operates at 40 mph. Find the min. change and clearance interval (CCL).
if chart or graoh where use dplease include below and explain
The geometric and traffic characteristics are shown below, determine 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.
South
Approach
S6 fi
North
East
West
Approach
56 fi
Approach
Approach
68 f
Арproach Widih
Peak-hour approach volume
Left turn
Through movement
Right turn
PHF
Confilicting pedestrian volume 900 ped/hr 1200 ped/hr 1200 ped/hr 900 ped/hr
133
420
73
168
134
373
135
563
516
178
140
169
0.95
0.95
0.95
0.95
Assume the following saturation flows:
Through lanes: 1760 vehIn/h
Through and right lanes: 1540 veh/In/h
Left lanes: 1100 veh/n/h
Left and through lanes: 1320 veh/in/h
Left, through, and right lanes: 1210 veh/n/h
Chapter 7 Solutions
Traffic And Highway Engineering
Ch. 7 - Prob. 1PCh. 7 - Prob. 2PCh. 7 - Prob. 3PCh. 7 - Prob. 4PCh. 7 - Prob. 5PCh. 7 - Prob. 6PCh. 7 - Prob. 7PCh. 7 - Prob. 8PCh. 7 - Prob. 9PCh. 7 - Prob. 10P
Ch. 7 - Prob. 11PCh. 7 - Prob. 12PCh. 7 - Prob. 13PCh. 7 - Prob. 14PCh. 7 - Prob. 15PCh. 7 - Prob. 16PCh. 7 - Prob. 17PCh. 7 - Prob. 18PCh. 7 - Prob. 19PCh. 7 - Prob. 20PCh. 7 - Prob. 21PCh. 7 - Prob. 22PCh. 7 - Prob. 23PCh. 7 - Prob. 24PCh. 7 - Prob. 25PCh. 7 - Prob. 26PCh. 7 - Prob. 27PCh. 7 - Prob. 28P
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- QUESTION 4 What is the intersection sight distance (ft) needed at a yield controlled intersection for a passenger car to turn right onto a 2- way, 2-lane road with a design speed of 50 mph? [round to the nearest foot]arrow_forwardb) What are the main disadvantages of traffic signal controlled intersection in Kumasi.arrow_forwardConsider the tabulated intersection design data below, then the number of vehicles stopped during the red interval for Phase EW is vehicles. Assume that Qs is 2000 about .............. vphpl and use Webster's method procedure. Qa (vph) Yellow All-red ts (sec) Lane 1 Lane 2 (sec) (sec) Phase N 500 600 2 2 3 Phase S 650 550 2 Phase EW 300 250 2 1 2 а. 13 b. 10 6. d. 8. C.arrow_forward
- Two adjacent signalized intersections along a major arterial are 650 ft apart (stop line to stop line distance). If the space mean speed between these two intersections is 22 mph, what should be the signal offset of the downstream intersection relative to the upstream intersection? Group of answer choices 20.0 sec 13.5 sec 40.0 sec 29.5 secarrow_forwardThe crossing of traffic streams moving the same general direction accomplished by merging and diverging. Undercrossing Travel way Weaving Flared intersectionarrow_forwardA type of intersection applied for elevated traffic volumesarrow_forward
- what could happen if this section of road way provided a sight distance of (500)ft V=(70)mph , if collision would accrue, determine : the collision speed , if f= 0.348arrow_forwardA Blank 1 is an intersection with a central island around which traffic must travel Blank 2 and in which entering traffic must yield to circulating trafficarrow_forwardIn the 4- legged intersection, if G1-11.31 sec, G2 1.2 min, G3 = 58 sec, N1= 100, N2 = 560 pce/lane, N3 = 448 pce/lane, and N4 = %3D 495 pce/lane, then G4 = %3D Oa. 44 sec O b. 36 sec Oc. 29 sec O d. None of the given answers O e 40 sec Of 32 secarrow_forward
- A large grain elevator is located 40 feet from the centerline of a two-lane highway (55 mph speed limit, 12-ft lanes and level terrain). The elevator is situated on the inside of a horizontal curve with a radius of 500 feet measured to the centerline of the highway. Assuming that the elevator is the only sight restriction on the curve, what is the available sight distance along the curve (measured to the center of the inside lane)? Does adequate stopping sight distance exist?arrow_forward1:35 Expert Q&A Done An intersection whose width is 88 ft if the maximum allowable speed on the approach roads is 40 mi/h. Assume average length of vehicle is 20 ft, a deceleration rate of 11.2 ft /sec2, perception- reaction time (lamda)= 1 sec, grade = 0.03.The minimum yellow %3D interval IS:arrow_forwardTask 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_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