Two traffic signal systems are being considered for an intersection. One system costs $32, 000 for installation and has an efficiency rating of 79%. requires 27 kW power (output), incurs a user cost of $0.22 per vehicle, and has a life of 12 years. A second system costs $43, 000 to install, has an efficiency rating of 90%. requires 32 kW power (output), has a user cost of $0.21 per vehicle, and has a life of 17 years. Annual maintenance costs are $70 and $90. respectively. MARR = 12% per year. How many vehicles must use the intersection to justify the second system when electricity costs $0.07/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. At least vehicles per day must use the intersection to justify the second system. (Round up to the nearest whole number.)