when i visited the u.k i made an *** out of myself when i bought food at tesco. the troley wheels locked and i stood there like an idiot not knowing why. how does it work. In my country we have normal trolley's!!!!!!
2006-09-11 22:48:44 · 11 answers · asked by muffin 2 in Science & Mathematics ➔ Engineering
There are two methods currently in use. One system where each exit to the supermarket grounds has a stainless steel plate which has slots which when the rear wheels pass over they get lodged and effectively a brake is applied. The other method is a loop is set in the perimeter of the supermarket which produces a magnetic field. this then acts on the wheels when the trolly passes over them.
2006-09-12 09:10:11 · answer #1 · answered by adamjordanevans2001 2 · 0⤊ 0⤋
It's worked by RFID (Radio frequency identification) The perimeter of the store has a loop antenna which outputs a low level signal. The trolley wheel lock remains free within this field, but locks if one tries to take outside.
2006-09-11 22:59:16 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Some Tesco's Trolleys are fitted with a vibration lock too, to stop them being taken away from the store.
As they pass over a dimpled row of slabs near the exit they lock up.
2006-09-11 22:55:53 · answer #3 · answered by 'Dr Greene' 7 · 0⤊ 0⤋
Usually the only times that the trolleys lock is when you've taken them too far from the store. Its kind of an anti theft device so that many of them don't end up in the canals by the yobs over here.
2006-09-11 22:55:12 · answer #4 · answered by K's Mom 3 · 0⤊ 0⤋
Magnetic wheels that lock & can only be unlocked by the staff. They lock when you go over a metal strip burried in the ground.
2006-09-11 22:54:33 · answer #5 · answered by bty937915 4 · 0⤊ 0⤋
Its just got a little foot pedal to put the brake on or life the brake off. Its quite handy to stop it rolling into your car whilst unloading!
2006-09-11 22:53:40 · answer #6 · answered by lindsay 4 · 0⤊ 0⤋
I continuously do yet i think of its because of the fact I drag my ft and my denims continuously touch the floor which i think of builds up the can charge. I continuously yelp when I get the tremendous ones with a small blue flash. :o)
2016-12-15 06:36:57 · answer #7 · answered by ? 3 · 0⤊ 0⤋
That depends on where you parked it. Did one of the wheels have a yellow brace attached to it?
2006-09-12 14:55:24 · answer #8 · answered by Anonymous · 0⤊ 0⤋
LOL
Ok, I dont know really
2006-09-11 22:57:26 · answer #9 · answered by Anonymous · 0⤊ 0⤋
nothing has stopped me from nicking them
2006-09-13 04:33:52 · answer #10 · answered by clarkey 2 · 0⤊ 1⤋