3. Determine the LOS for pedestrians at two-phase signalised intersection with a cycle length of 90 s. the phase serving the major street vehicular traffic gets 50s of green whereas the phase serving the minor street vehicular traffic gets 30 s of green. Useful formula: dp = Table for assessing the LOS = LOS A B C D E F 0.5 (C-g)² C Average delay/pedestrian (s) >5 25-10 ≥10-20 ≥20-30 ≥30-45 245

3. Determine the LOS for pedestrians at two-phase signalised intersection with a cycle length of 90 s. the phase serving the major street vehicular traffic gets 50s of green whereas the phase serving the minor street vehicular traffic gets 30 s of green. Useful formula: dp = Table for assessing the LOS = LOS A B C D E F 0.5 (C-g)² C Average delay/pedestrian (s) >5 25-10 ≥10-20 ≥20-30 ≥30-45 245

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter8: Intersection Control

Section: Chapter Questions

Problem 8P

See similar textbooks

Similar questions

QUESTION 7 During one hour, 1800 pedestrians passed by the observation point on the pedestrian walkway. The flow appeared to be relatively consistent over the hour (i.e. PHF=0.90). The effective walkway width was 5 ft. Based on the pedestrian flow per unit width (p/ft/min), at what LOS was the walkway operating, assuming there were platoons of pedestrians. O A B E OF
Compute the peak hour factor if the hourly volume of traffic is 1800 vehicles/hour and the highest 15-min. volume is 750. A 0.3 В 0.5 0.6 0.4
A rail transit system has prescribed the following factors:1. Peak hour demand = 30000 passengers/hr2. Minimum required speed = 55 ft/sec3. Deceleration = 3 ft/sec24. Safety factor = 1.455. Vehicle length = 80 ft6. Allowable vehicle capacity = 150 pass/veh7. Guideway utilization factor = 0.838. Minimum headway = 110 secHow many cars should the train consist of to provide adequate passenger capacity?
QUESTION 1 During one hour, 1800 pedestrians passed by the observation point on the pedestrian walkway. The flow appeared to be relatively consistent over the hour (i.e. PHF=0.90) without distinct platoons. The effective walkway width was 5 f t. Pedestrian were moving at roughly 4.25 ft/sec. Based on the observed average spacing (ft²/ped) determine the pedestrian LOS. A B E OF
6. A shared three-way pedestrian-bicycle facility has a width of 10 ft and carries a peak pedestrian flow of 500 p/15 min. The bicycle flow rate is 150 bicycles/h in the same direction as the pedestrians, and 160 bicycles/h in the opposite direction. The average pedestrians' speed is 4 ft/see, and that for bicycles is 8 ft/see. a) Determine the pedestrians' LOS b) Determine the LOS for the shared bicycle paths
5. Design signal for the intersection shown in Figure 1. Assume no pedestrian activity. Assume amber time as 3s and all-red time as 1s for each phase. 750 820 850 765 335 ➖➖➖➖➖➖➖➖ '250 Lane width = 3m Sat. flow rate: ΤΗ -1,800 pcuphgpl TH, RT-1,650 pcuphgpl TH, LT-1,700 pcuphgpl IL tr Phase A Phase B
The average normal flow of traffic on cross roads A and B during design period are 400 and 250 pcu per hour; the saturations flow values on these roads are estimated as 1250 and 1000 pcu per hour respectively. The all-red time required for pedestrian crossing is 12 secs. Design two phase traffic signal by Webster's method.
11. If cars pass a certain point on a highway at a mean headway of 10 seconds, the vehicle flow rate at the point is: а. 360 vph b. 480 vph с. 750 vph d. 1200 vph 12. The overall capacity of a signalized street network is predominantly limited by the capacity of its a. Links b. Intersections c. Drivers d. Trucks 13. If the peak 15 minutes of the peak hour carry 32% of the peak hour traffic, what is the corresponding peak hour factor? а. 0.84 b. 0.89 с. 0.78 d. 0.72
Exercise 6 A three phase signal design is given below. ● ● ● Hic Signal What is the sum of the flow ratios for the critical lane groups? What is the total lost time for a signal cycle assuming 2 seconds of clearance lost time and 2 seconds of startup lost time per phase? What is the cycle length using Webster Method? EB - Phase 1 2 3 -200 20 SB 30 100- Lane group SB NB EB WB 400 1000 NB 150 50 300 30 WB Saturation Flows 3400 veh/hr 3400 veh/hr 1400 veh/hr 1400 veh/hr
On a city street, a transit line operates through signalised intersections. Each transit has three compartments, and each compartment can accommodate a maximum of 40 passengers. The acceptable green-to-cycle time ratio (g/C) to the particular street is 0.35. The clearance between successive transits should be 70 seconds. The passenger's dwell time is 110 secounds. The reduction factor for dwell time and arrival variation is 0.785. Estimate the capacity of the transit line in passengers/h. Answer: the capacity of the transit line = passengers/hour Report your answers to the nearest whole number without units (i.e., if your answer is 1720.258, you should enter 1720 or if your answer is 873.564, enter 874)
What will be the theoretical capacity of a traffic lane with one way traffic flow at a stream speed of 40 kmph? [Assume the average space gap between vehicles to follow the relation s where V is stream velocity in kmph, t is = 0.278VŁ 8. %3D average reaction time = 0.7 sec and average length of vehicles 5 m]
Problem-5 b, What is the theoretical capacity (in vehicle/hour/lane) of a traffic lane with one way traffic flow at a stream speed of 50 kmph? wwww [Assume the average space gap between vehicles to follow the relation Sg = 0.278 V.t. where 'V' is the stream speed in kmph, 't' is the average reaction time = 0.7 sec, average length of vehicles = 5.0 m]