At a fast food place. What are motion sensors below a drive through window used for, when there is always someone at the window?
by 
- M.C.S. - Dave
ANSWERS: 4
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Fast food places use total drive-thru times to calculate how fast their service is. One sensor is placed at the order speaker/menu, and this sensor begins the clock. The last sensor detects when a car leaves the window, and stops the clock, giving you the time for that order.
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Ender's answer is correct. But, also, there is not "always" someone at the window all the time. They have other duties as well when there is no traffic. The first sensor alerts them to come to the window.
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...both Tom47 & Ender's answer is correct...I rarely go to fast food places...a while back I couldn't resist a grilled Santa Fe Chicken Sand from Carl's Junior's...but it was around 6:30 AM when I was in town...so I would order it...and the sensor begins to click off the minutes it takes for their service...well, since it was at 6:30 am...& they had their breakfast food ready, but no lunch stuff...it would take quiet awhile...so they would ask me to drive on through and wait in the parking lost and they would bring it out to me...that's how I found out what the sensors were for!
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to detect if there is a car that is ready to order..it alerts the person who works in drive-thru, so he/she can take the orders..
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