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 time spent in the system in minutes/vehicle. Answer in whole number.

Q: Data from a 6-ft by 6-ft inductive loop detector collected during a time period of 33 sec indicate…

A: Given:Mean speed of traffic: 52 mi/hTime period: 33 secondsNumber of vehicles counted: 15Average…

Q: Select the true items related to critical gap. Select only the four correct answers.      It is a…

A: Critical gap :  A critical gap is a minimum time gap that required to enter in a circulating…

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

A:

Q: At a toll booth, vehicles arrive with a mean arrival rate of 2 vehicles per minute and they are…

A: Given data:The arrival rate, λ=2 vehicles per minuteThe service rate, μ=6 vehicles per minute

Q: A traffic engineer has set up a one-mile study segment of a corridor. He measures the speed of 10…

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: A freeway has the following characteristics: volume: 1700 veh/hr average vehicle speed: 45 mph What…

A:

Q: what is the departure rate

A:

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: The table below shows the number of vehicles observed on a corridor over each 15-minutes during the…

A: Given:Required:Peak hour factor

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

A: Given data:- The recorded volume were 243, 276, 318 and 490.   Use formula:- PHF=V60490×Vnn ----(1)

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: The results of a traffic study is given in the form of a frequency distribution table. Speed Range…

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: 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: Question 23 On a two-lane highway, compared to the baseline, how much does the average travel speed…

A: A two-lane highway-Passing zone= 40%So, No passing zone =(100-40) % = 60%Opposing flow rate= 400…

Q: The spot speed data on the corridor was collected as shown in the Table below. Spot speed (mph)…

A: Spot speed of vehicle 1, Spot speed of vehicle 2, Spot speed of vehicle 3, Spot speed of vehicle 4,…

Q: At time ? = 0, when the border inspection station was scheduled to open, eight vehicles were already…

A: Arrival rate =4 veh/minDeparture rate= 7.5 veh/min

Q: hello can i get some help please?

A: Average Occupancy = 80%Average Turnover = 5.67 vehicles/bay (3 hours)or Average Turnover = 1.89…

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.