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- hree routes connect an origin and a destination with performance functions: ?1=8+0.5?1; ?2=1+2?2; and ?3=3+0.75?3; with the x’s being the traffic volume expressed in thousands of vehicles per hour and t’s being the travel time expressed in minutes. If the peak hour traffic demand is 3400 vehicles, determine user equilibrium traffic flows. [Hint: Note that one of the paths will not be used under the equilibrium conditionA toll bridge carries 6000 vch/day The current toll is $3.50/vehicle. Studies have shown hat for each increase in toll of 50 cents, the traffic volume will decrease by 500 veh/day. Jus desired to increase the toll to a point where revenue will be maximized. (a) Write the expression for travel demand on the bridge, related to toll increase and current volume. (b) Determine the toll charge to maximize revenbes. (o Determine traffic in vel/day after the loll increase, (d) Determine the total revente increase with the new tol.Three routes connect an origin-destination pair with performance functions:t₁ = 20 +0.5x1t2 = 4+ 2x2t3=3+0.2x3with t in minutes and x in thousand vehicles per hour.(a) Determine the User Equilibrium flow on each route if q = 4000veh/h. (b) What is the minimum q (origin-destination demand) to ensure that all the three routes are used under user equilibrium? (c) Suppose that Route 1 is closed for repair. Find the system optimal flow on routes 2 and 3 and compute the total travel times.
- 2. Explain the following terms: a) AADTb) ADTc) Volume flow diagramd) Thirtieth highest hourly volume This is the question of Transport Infrastructure.8.21 Three routes connect an origin and destination with performance functions t₁ = 2 +0.5x₁,₂ = 1 + x2 and 13 = 4 + 0.2x, (with f's in minutes and x's in thousands of vehicles per hour). Determine user- equilibrium flows if the total origin-to-destination demand is (a) 5000 veh/h.4. Three routes connect and origin and a destination with performance functions t₁ = 8 + x₁, t₂ = 1 + 2x₂, and t3 = 1 + 0.5x3 (with x's in thousands of vehicles per hour and t's in minutes). If the peak-hour traffic demand is 3400 vehicles, determine user- equilibrium traffic flows on each route. [Ans: x₂ = 0.68]
- One of the following choices is a not among the variables which affect the traffic volume characteristics : * Time variation. O Type of use. Traffic counts. Composition of traffic. O Type and classification of highway.Which of the following is not a factor for which, if base conditions are not met, a measurable reduction in capacity occurs? O Presence of heavy vehicles. O Lane width. O Presence of ramps. O Extent of unfamiliar drivers. O Weather conditions.1. What are the aspects to consider with regards to the effects of projects on theenvironment, and why is it important to incorporate Environmental ImpactAssessment during the urban transportation planning? (Answer in minimum of 5 sentences.) 2. How does socioeconomic characteristics of people living in an area affect thedemand for urban travel? 3. Why is it important to conduct a Traffic Impact Study for a new developmentespecially when it is located in an urban area?
- Consider a Design-and-Build project of a single-entrance toll plaza awarded to XYZConstruction Corp. Based on the traffic surveys conducted during planning phase, it was found out that the present travel demandalong the existing highway isfollows a negative exponential distributionwith a mean of 4XYZkph. On the other hand, the company received three bid proposals of equipment that they may install in the toll servers with their corresponding service rates:Equipment I(random service)0.7Xseconds per vehicleEquipment II(random service)0.5+Y/100seconds per vehicleEquipment III(regular service)0.8Zseconds per vehicleIn addition, the demand is projected to increase annually by a factor of 1.3Z. If you are the transport planner tasked to design the toll facility, determine the following5years hence:i.The average waiting time of vehicles if Equipment Iwill be installed.ii.The average time spent in the system if Equipment IIIwill be installed.iii.What equipmentwould you recommend as the most…Q2 / Find the number of lane for the design roadway given the following traffic data: ADT = 7651 vehicles/hour in both direction, - 2% grade , K = 12% , D= 55% , Truck 30%, Busses = 10% , Normal growth for design period = 30% , Generated growth = 20%, Development traffic = 250% , Track = 2 PCU , Busses = 3 PCU and Ideal Сараcity = 1300 PCU / hour / lane.Determine the different types of Transportation Softwares/Programs that traffic/transportation engineers use. Please categorize them into subsection according to their usage. Thank you :)