Two traffic signal systems are being considered for an intersection. One system costs $33,000 for installation and has an efficiency rating of 81%, requires 30 kW power (output), incurs a user cost of $0.24 per vehicle, and has a life of 12 years. A second system costs $46,000 to install, has an efficiency rating of 88%, requires 36 kW power (output), has a user cost of $0.19 per vehicle, and has a life of 15 years. Annual maintenance costs are $70 and $90, respectively. MARR = 9% per year. How many vehicles must use the intersection to justify the second system when electricity costs $0.08/kWh? Assume salvage value for each system equals zero. Project the difference in the user cost as savings for the second system. There are approximately 8,760 hours/year E Click the icon to view the interest and annuity table for discrete compounding when the MARR is 9% per year. At least vehicles per day must use the intersection to justify the second system. (Round up to the nearest whole number.)

Two traffic signal systems are being considered for an intersection. One system costs $33,000 for installation and has an efficiency rating of 81%, requires 30 kW power (output), incurs a user cost of $0.24 per vehicle, and has a life of 12 years. A second system costs $46,000 to install, has an efficiency rating of 88%, requires 36 kW power (output), has a user cost of $0.19 per vehicle, and has a life of 15 years. Annual maintenance costs are $70 and $90, respectively. MARR = 9% per year. How many vehicles must use the intersection to justify the second system when electricity costs $0.08/kWh? Assume salvage value for each system equals zero. Project the difference in the user cost as savings for the second system. There are approximately 8,760 hours/year E Click the icon to view the interest and annuity table for discrete compounding when the MARR is 9% per year. At least vehicles per day must use the intersection to justify the second system. (Round up to the nearest whole number.)

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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