At an impaired driver checkpoint, the time required to conduct the impairment test varies (according to an exponential distribution) depending on the compliance of the driver, but takes 60 seconds on average. If an average of 30 vehicles per hour arrive (according to a Poisson distribution) at the checkpoint, determine the average queue length in vehicles.

Q: Given traffic flows for each lane group at a T junction shown in Figure below. The saturation…

A: Critical lane volume for each phase: P1: 500, P2: 250, P3:150 Sum of criticial lane volume,ΣVc =…

Q: At an impaired driver checkpoint, the time required to conduct the impairment test varies…

A:

Q: Question 3: (a) A section of highway is known to have a free-flow speed of 95 km/h and a capacity of…

A: Given, Free flow speed (uf) = 95 kmph  Capacity (qc) = 3300 vph  Passing Time (t) = 1.6 sec/veh

Q: researcher was positioned at the side of a 2-lane rural highway. He recorded the volume of…

A: To ascertain the quantity, movements, and types of road vehicles at a certain site, traffic volume…

Q: Vehicular arrival at an isolated intersection follows the Poisson distribution. The mean vehicular…

A: Required : Probability that at least 2 vehicles will arrive in any given 1-minute interval.

Q: determine the accident rate. If the number of accidents for 7 years recorded in a certain…

A: Accident rate = Number of accidents / (ADT * N *365 )  Lets find the accident rate per HMVM for 100…

Q: A morning traffic volume on a major road was 670 vehicles during 30 minutes, and a Poisson…

A: number of vehicles=670major time(T)=30minminor time(t)=7sec

Q: At an impaired driver checkpoint, the time required to conduct the impairment test varies (according…

A: Given Data, Average Flow rate arriving = 30 vehicle/hr Average time spend on test = 60 seconds

Q: 5.12 A toll booth on a turnpike is open from 8:00 A.M. to 12 midnight. Vehicles start arriving at…

A: Vehicle start approaching at 7:45 am Processing time start at 8:00am

Q: D. When an incident occurs that causes two lanes to be closed, a three-lane highway in one direction…

A:

Q: An investigation was conducted to determine the delay at Sohar downtown intersection. The traffic…

A: Apologies. We only answer three parts of a question at a time. we will answer the first three parts…

Q: ing characteristics and carries condition, determine the tota

A: Number of Lanes = 4Shutted down lanes = 2 Volume of traffic = 4250 veh/hrTime to clear obstruction =…

Q: Supposed vehicles arrive at a signalized road intersection at an average rate of 360 veh/hr and the…

A:

Q: The number of vehicles arriving at the upstream of a freeway bottleneck (free of queues) is shown in…

A: Interval Upstream arrival rate, vph Queue length 6:00-6:15 4000 0 6:15-6:30 6000 10 6:30-6:45…

Q: Question 2: A student safety advocacy group believes that drivers are speeding down Manhattan…

A:

Q: At the exit of a toll gate with a single booth, vehicles arrive at random at a rate of 20 vehicles…

A: Solution-To Determine,The average time vehicles spent in the system

Q: A flow characteristic that is related to the density and obtained from speed data is occupancy. Data…

A: Given ,            Occupancy = 9.375% = 0.09375            Detector d = 6 Ft            Mean vehicle…

Q: Vehicles arrive according to a Poisson process (random arrival) to a parking lot with mean arrival…

A:

Q: Consider only a single lane of a highway. Based on extensive data from an urban freeway it is…

A: single lane highwayfreee-flow speeds are represented by normal distribution…

Q: An observer counts 360 veh/h at a specific highway location. Assuming that the arrival of vehicles…

A: λ=360vehhr=0.1vehsect=20secso,Pn=λtne-λtn!

Q: In speed and delay study, if the average journey time on a stretch of road length of 3.5 km is 7.55…

A: Given - Average journey time = 7.55 minutes Average stopped delay = 1.5 minutes Road length = 3.5…

Q: Suppose that a crash occurs on a two lane highway, blocking one lane for 45 minutes and dropping the…

A:

Q: Morning peak tratfic upstre 3 booths, each of which can handle one vehicle every 6 second. a. If…

A: According to given data Morning peak traffic upstream of toll boothToll Plaza consists of 3 booths…

Q: 4) A spot speed study conducted on Sacramento State campus reported an average speed of 28.51 mph…

A: Given: Average Speed=28.51 mph Speed limit = 25 mph Standard deviation =5.75 mph

Q: The time between arrivals of vehicles at particular intersection follows an exponential probability…

A: Given data, Mean arrival time interval between vehicle μ = 15 sec.

Q: The probability (round off to two decimal

A: Given, Determine the probability of the vechile at given time ineterval ?Where, Mean vehicular…

Q: Data obtained from aerial photograph showed eight vehicles on 200 m long section of road. Traffic…

A: The length of the road section is L=200 m. The number of vehicles are 8. The time headway is T=3…

Q: Studies have shown that the traffic flow on a two-lane road adjacent to a school can be described by…

A:

Q: An observer counts 240 veh/h at a specific highway location. Assume that the vehicle arrival a the…

A: Given data- vehicle count λ=240 veh/hPoisson's distributionTime interal t=30 sTo Find-The…

Q: Determine the time mean speed (kph)

A: Given Data:- Vehicle  Time (Minutes) 1 1.2 2 1.0 3 1.4 4 1.3 5 1.1   Time mean…

Q: Vehicles arrive at the carpark of an airport. Vehicles have to queue at the single entrance gate of…

A:

Q: 2. Data obtained from aerial photography showed six vehicles on a 600 ft-long section of road.…

A:

Q: Two observers have determined that the time headways between successive vehicles are exponentially…

A: Given data: Time headways between successive vehicles are exponentially distributed 70% of headways…

Q: The average queue length at the intersection of the two roads with a stop sign is 4 vehicles. If the…

A:

Highway Safety

Proper highway safety refers to the methods or rules that prevent highway travelers from being killed or severely injured. Proper highway safety measures help to protect motorists, cyclists, pedestrians, passengers on public transport, and so on.