PRIN.OF HIGHWAY ENGINEERING&TRAFFIC ANA.
7th Edition
ISBN: 9781119610526
Author: Mannering
Publisher: WILEY
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 5, Problem 48P
To determine
The average delay rate per vehicle resulting from the accident.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A freeway with two northbound lanes is shut down because of an accident. At the time of theaccident, the traffic flow rate is 1200 vehicles per hour per lane and the flow remains at this level.The capacity of the freeway is 2200 vehicles per hour per lane when not impacted by an accident.The freeway is shut down completely for 20 minutes after the accident and then one lane is openfor 20 minutes and finally both lanes are opened (40 minutes after the accident). What is theaverage delay per vehicle resulting from the accident (assuming D/D/1 queuing)?
freeway with two northbound lanes is shut down because of an accident.
At the time of the accident, the traffic flow rate is 1200 vehicles per hour per lane and the flow remains at this level.
The capacity of the freeway is 2200 vehicles per hour per lane when not impacted by an accident.
The freeway is shut down completely for 20 minutes after the accident; then one lane is opened 20 minutes after accident; and finally both lanes are opened 40 minutes after the accident.
What is the total delay resulting from the accident (assuming D/D/1 queuing)?
QUESTION 4
A segment of a 4-lane highway is being designed for a FFS of 60 mph through relatively level terrain. The directional
(i.e. one-way) design volume is 1,200 vehicles per hour. If 15% of the design volume is expected to be heavy vehicles
(i.e. trucks and buses), what is the heavy vehicle adjustment used to determine the flow rate? Provide you answer to the
nearest hundredths.
Chapter 5 Solutions
PRIN.OF HIGHWAY ENGINEERING&TRAFFIC ANA.
Ch. 5 - Prob. 1PCh. 5 - Prob. 2PCh. 5 - Prob. 3PCh. 5 - Prob. 4PCh. 5 - Prob. 5PCh. 5 - Prob. 6PCh. 5 - Prob. 7PCh. 5 - Prob. 8PCh. 5 - Prob. 9PCh. 5 - Prob. 10P
Ch. 5 - Prob. 11PCh. 5 - Prob. 12PCh. 5 - Prob. 13PCh. 5 - Prob. 14PCh. 5 - The arrival rate at a parking lot is 6 veh/min....Ch. 5 - Prob. 16PCh. 5 - At the end of a sporting event, vehicles begin...Ch. 5 - Prob. 18PCh. 5 - Prob. 19PCh. 5 - Vehicles begin arriving at a single toll-road...Ch. 5 - Vehicles begin to arrive at a toll booth at 8:50...Ch. 5 - Prob. 22PCh. 5 - Prob. 23PCh. 5 - Prob. 24PCh. 5 - Prob. 25PCh. 5 - Vehicles begin to arrive at a parking lot at 6:00...Ch. 5 - At a parking lot, vehicles arrive according to a...Ch. 5 - Prob. 28PCh. 5 - Prob. 29PCh. 5 - Prob. 30PCh. 5 - Prob. 31PCh. 5 - Prob. 32PCh. 5 - Prob. 33PCh. 5 - Vehicles arrive at a recreational park booth at a...Ch. 5 - Prob. 35PCh. 5 - Prob. 36PCh. 5 - Prob. 37PCh. 5 - A truck weighing station has a single scale. The...Ch. 5 - Prob. 39PCh. 5 - Prob. 40PCh. 5 - Vehicles leave an airport parking facility (arrive...Ch. 5 - Vehicles begin to arrive at a parking lot at 7:45...Ch. 5 - Prob. 43PCh. 5 - Prob. 44PCh. 5 - Prob. 45PCh. 5 - Prob. 46PCh. 5 - Prob. 47PCh. 5 - Prob. 48PCh. 5 - Prob. 49PCh. 5 - Prob. 50PCh. 5 - Prob. 51PCh. 5 - Prob. 52PCh. 5 - A theme park has a single entrance gate where...Ch. 5 - Prob. 54PCh. 5 - Prob. 55P
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
- A lane on a freeway displays the following characteristics: (a) the average headway between vehicles is 2.8s, and (b) the average spacing between vehicles is 235 ft. What is the rate of flow for the lane? What is the density of traffic in the lane? What is the average speed (in mph)?arrow_forwardQUESTION 4 A segment of rural freeway is being designed for a FFS of 70 mph through rolling terrain. The directional (i.e. one-way) design volume is 3,000 vehicles per hour. If 10% of the design volume is expected to be heavy vehicles (i.e. trucks and buses), what is the heavy vehicle adjustment used to determine the flow rate? Provide you answer to the nearest hundredths.arrow_forwardA section of highway has a linear speed-density relationship. The capacity of the roadway is 3150 veh/hr and this capacity is observed at an average speed of 35 mi/hr. What speed is observed when traffic is uncongested with a flow of 2500 veh/hr? What is the density of traffic when it is congested and operating at 75% of the capacity?arrow_forward
- An incident occurs on a freeway that has a capacity in the north bound direction, before incident, of 4000 veh/h and a constant flow of 2900 veh/h during the morning commute (no adjustments to traffic flow result from the incident). At 8:00am, a vehicle crash closes the freeway to all traffic. At 8:12am, the freeway is partially opened with a capacity of 2000 veh/h. Finally, the crash site is removed and the freeway is restored to full capacity of 4000 veh/h at 8:31am. Assuming the traffic follows a D/D/1 queueing (FIFO queue discipline) to determine time of queue dissipation, longest queue length, total delay, average delay per vehicle, and longest wait of any vehicle.arrow_forwardAn eight-lane freeway has a capacity of 8000 vehicles hour in each direction under normal conditions. On a particular day, an accident occurs at 8:00 am. Initially, two lanes are blocked, which reduces the capacity of the freeway past this point to 2,000 vehicles per hour. At 8:45, the accident is removed from the traffic lanes, which increases capacity past this point to 4000 vehicles per hour, and at 9:00 it is removed completely, which restores capacity to 8000 vehicles per hour. Demand past the point of the accident is shown below. Finish the following table and draw the queuing diagram. Time period 8:00-8:15 8:15-8:30 8:30-8:45 8:45-9:00 9:00-9:15 9:15-9:30 15 minute volume 800 1000 1200 800 700 1000 Cumulative volume 800 1800 3000 3800 4500 5500 Finish this Table, Time period Time Arrival Departure # of vehicle in queue 8:00:00 0 0 0 0 8:05:00 5 267 167 100 8:10:00 10 8:15:00 15 8:20:00 20…arrow_forwardA segment of rural freeway is being designed for a FFS of 70 mph through rolling terrain. The directional (i.e. one-way) design volume is 3,000 vehicles per hour. If 10% of the design volume is expected to be heavy vehicles (i.e. trucks and buses), what is the heavy vehicle adjustment used to determine the flow rate? Provide you answer to the nearest hundredths. Response Feedback: f₁ HV 1 1+ · + P ₁ (E₁ − ¹) T T -where PT-0.1, ET=3.0arrow_forward
- A one-way road is found to have a capacity of 2000 veh/hr. If a traffic enforcer says thatt thetraffic volume there is only 150 veh/hr, can you conclude that the traffic condition is not congested? Why or why not? Illustrate using a diagram.arrow_forwardVehicles arrived at the entrance of San Juanico Bridge in Tacloban at a rate of 180 vehicles per hour. Vehicles must stop at the tollgate where vehicles will have to pay a toll fee upon entering the bridge. It would take 15seconds per vehicle for the attendant to issue a trip ticket. Compute the traffic intensity at the bridge.arrow_forward1) A 6-lane two-way arterial road has a maximum flow of 6,000 vehicles per hour on one direction. It is operating at 3,600 vehicles per hour at time, t=0. A collision occurs, blocking the two lanes, and restricting the flow of the outermostlane to 1,600 vehicles per hour. After 40minutes, the police have cleared the middlelane from accident debris; the operating volume at that time increased to 2,400 vehicles per hour.20 minutes past, the innermost lane was finally cleared of the accident. Traffic returns to normalas soon as the queue has already immoderate. a.Determine the maximum length of queue that occurred. b.How long did it take to dissipate the queue? c.If a vehicle entered the road at t=10 minutes, how long will it take for it to leave the traffic?arrow_forward
- 2. There are two routes in use between Zones 1 and 2. The volume-delay functions for the two routes are as follows: V1 V2 t1 = 22 + 250 t2 = 15 + 150 where t = travel time(minutes) V = traffic volume If the total traffic volume is 6,950 vehicles per hour between the two zones, what are the traffic volumes and travel times on each of the two routes at a user-equilibrium (UE) condition?arrow_forwardA one-way road is found to have a capacity of 2000 veh/hr. If a traffic enforcer says that the traffic volume there is only 150 veh/hr, can you conclude that the traffic condition is not congested? Why or why not? Illustrate using a diagram.arrow_forward10.A lane on a freeway displays the following characteristics: (a) average headway between vehicles is 1.9s, and (b) the average spacing between vehicles is 210 feet. What is the rate of flow for the lane? What is the average speed in mi/hr? 11. Define 'Crash Modification Factor (CMF)" and describe how one might be used by a transportation agencyarrow_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