Discuss the five modes of transport by comparing each of the following: operational overview, typical strengths and limitations, freight characteristics, and the vehicle types found in each mod
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Discuss the five modes of transport by comparing each of the following: operational overview, typical strengths and limitations, freight characteristics, and the vehicle types found in each mode.
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- 3. Enumerate and describe each mode of transportation?Consider a simple transportation network that has one origin and one destination with two paths/links that provide access from the origin to the destination. One link is 9 miles long and has a capacity of 4800 vehicles per hour and a speed limit of 66 miles per hour. The other link is 6 miles long and has a capacity of 2400 vehicles per hour and a speed limit of 42 miles per hour. Assuming that 6000 drivers wish to make the trip from the origin to the destination, find the loaded network? a1 = 1.37904, b1 = 8.24124, a2 = 1.236, b2 = 6.2712Explain and differentiate among the term capacity, possible capacity, practical capacity, 85 percentile speed, 15 percentile speed. ( Subject- Transport engineering)
- 1) Suppose you are transport manager and asked to evaluate intermodal versus unimodal transportation for Istanbul-Izmir road using truck or truck+rail. If loading cost is 35 TL, unloading cost is 60 TL, Cost for truck (Ct) is 1100 TL, cost for rail (Cr) is 800 TL, total distance is 560 Km, and the carried amount is 1 container. If there is pre-transportation with 10 Km and 50 TL cost, find the optimal distance for rail to select intermodal transportation. Select one: a. 557 b. 503 c. 417 d. 529 2) Transport focus is with .............. Select one: a. none of them b. location and transport strategy c. location and inventory stragegy d. inventory and location strategyIn your own words, Compare the traffic evolution situation and mode of transportation before and now.12) List and define the 4 steps of the "4-step travel demand model" used in transportation planning.
- During morning peak hour, the passenger demand is 600. Assume that passenger demand is evenly distributed within that period and the average load/occupancy is 50 passengers per bus. Calculate the average headway of a city buses? If the passenger demand increases to be 750, calculate the number of bus units need to be added and the headway shorten?Discuss the advantages of involving the private sectors in the provision and maintenance of the road infrastructure, such as toll expressway from the perspective of the government, private companies, and road users.There are many benefits related to our highway system, but there are also many costs or detrimental effects that have come into focus in recent years. List four major detrimental effects that are directly related to the construction and use of your highway transportation system.
- [T] The following table provides hypothetical data regarding the level of service for a certain highway. Plot vehicles per hour per lane on the x-axis and highway speed on the y-axis. Compute the average decrease in speed (in miles per hour) per unit increase in congestion (vehicles per hour per lane) as the latter increases from 600 to 1000, from 1000 to 1500, and from 1500 to 2100. Does the decrease in miles per hour depend linearly on the increase in vehicles per hour per lane? Plot minutes per mile (60 times the reciprocal of miles per hour) as a function of vehicles per hour per lane. Is this function linear? Highway Speed Vehicles per Hour per Lane Density Range (vehicles / mi) > 60 < 600 < 10 60 - 57 600 - 1000 10 - 20 57 - 54 1000 - 1500 20 - 30 54 - 46 1500 - 1900 30 - 45 46 - 30 1900 - 2100 45 - 70 < 30 Unstable 70 - 200A toll bridge carries 10,000 veh/day. The current toll is $3.00/vehicle. Studies have shown that for each increase in toll of 50 cents, the traffic volume will decrease by 1000 veh/day. It is desired to increase the toll to a point where revenue will be maximized. Let V be the Volume X be the increase in toll charge (a) Write the expression for travel demand on the bridge related to toll increase and current volume. (b) Determine the increase in toll charge (c) Determine the new toll charge to maximize revenues. (d) Determine traffic in veh/day after toll increase. (e) Determine total revenue increase with new toll.Answer the following questions based on your own understanding. Use your own words for answering: 1. Identify and briefly describe the two basic demand forecasting situations in transportation planning. What are the three factors that affect the demand for urban travel? Define the following terms: (a) home-based work (HBW) trips, (b) home-based other (HBO) trips, (c) non-home-based (NHB) trips, (d) production, (e) attractions, (f) origin, and (g) destination.