Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Chapter 13, Problem 9P
To determine
The derivation of equivalent annual cost and the computation of the same.
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3. 8.5 Two different routes are under consideration for a new interstate
highway:
Table P8.5
The "long" route
Transmountain shortcut
Length of
Highway
22 miles
First Cost
$21 million
10 miles
10 miles $45 million
Annual
Upkeep
$140,000
$165.000
Table P8.5 Full Alternative Text
For either route, the volume of traffic will be 400,000 cars per year.
These cars are assumed to operate at $0.25 per mile. Assume a 40-year
life for each road and an interest rate of 10%. Determine which route
should be selected.
Average demand on a rural roadway ranges from zero to 600 veh/day when the cost per trip goes from $1.75 to zero.
(a) Calculate the net user benefits per year (in dollars) if the cost decreases from $1.50 to $0.75/trip (assume a linear demand function).
$ 29
x
Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results
roundoff error.
(b) Compare the value calculated in (a) with the benefits as calculated in typical highway studies. (Enter the benefits in dollars as calculated in typical highway studies.)
$ 88000
x
Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results E
roundoff error.
A bridge has been constructed between the
mainland and an island. The total cost (excluding
tolls) to travel across the bridge is expressed as C =
50 + 0.5V, where V is the number of veh/hr and C is
the cost/vehicle in cents. The demand for travel
across the bridge is V = 2500 - 10C.
Chapter 13 Solutions
Traffic and Highway Engineering
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- Question 50 At 7.7%, a bridge cost P 210M with a life of 21 years. The bridge must be partially rebuilt at a cost of P 100 M at the end of each 21 years, Calculate the capitalized dost if an annual maintenance of P 510,000 is required. Express your answer in whole number. « < Question 50 of 50 A Click Submit to complete this assessment. Save and Submit acer F11 PrtSc Del Home Pg Up F7 F8 F9 F10 F12 Pause F5 F6 FZ F3 Scr Lk SysRq Break Ins #3 24 % & 4-Backspace 5 € 7 8 W E Y U D F G K ~の エ 6arrow_forwardA toll bridge carries 10,000 veh/day. The current toll is ₱150/vehicle. Studies shown that for eachincrease in toll of ₱25, the traffic volume will decrease by 1000 veh/day. It is desired to increasethe toll to a point where revenue will be maximized.a. Write the expression for travel demand on the bridge related to toll increase and currentvolume. b. Determine the toll charge to maximize revenues. c. Determine traffic in veh/day after toll increase. d. Determine the total revenue increase with new toll.arrow_forwardA secondary road in a developing country, 30 km long is to be improved by surface treating the gravel surface without any change in length. The cost of improvement is estimated at $150,000 per km. Present annual transport costs for all traffic on the existing road (vehicle operating cost plus maintenance cost etc.) is estimated at $200,000 per km. After improvement this is expected to reduce to $170,000 per km per annum. Reconstruction takes place in two years with equal expenditure in each year. Assume that in the second year of construction, transport cost on the improved road is equivalent to present costs on half the length and new transport cost on the other half. Would you undertake the project? (MARR = 8% and the project life is 20 years after reconstruction.) Resealing would be required 10 years after reconstruction at a cost of $55,000 per km. Use the Net Present Value method.arrow_forward
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