2007-11-28 05:54:55 · 5 answers · asked by Anonymous in Cars & Transportation ➔ Other - Cars & Transportation
they are snow chains that spin under the tires when driving on snow and ice
2007-11-28 05:58:14 · answer #1 · answered by glock509 6 · 3⤊ 1⤋
Look closer next time.
If this is at an colder area, and the chains are mounted on a spoke so it can be spun like a flail, then it's called a "self-traction" or "auto-snow-chain" device. Basically, instead of going outside to put the chains on the tires, you push a button from inside the cab, hydraulics lower the flail and angle it to the chains will reach UNDER the traction tire, so the tire gets traction instead of spinning in the snow.
I know about such devices, but I live in San Francisco, where I don't see snow. :)
2007-11-28 06:09:32 · answer #2 · answered by Kasey C 7 · 1⤊ 1⤋
Glock is right, we have them on our line trucks durring the winter they are lowered and spin under the tires to give traction on snow and ice.
2007-11-28 06:01:58 · answer #3 · answered by loonatic72 6 · 2⤊ 0⤋
glock (1st answer) is 100% correct-I've seen them in action.
I wonder why they're not available for regular vehicles.
2007-11-28 16:58:35 · answer #4 · answered by zzooti 5 · 1⤊ 0⤋
To ground the vehicle . so no-one gets shocked when they step out (bad for heart attack victims)
2007-11-28 06:03:48 · answer #5 · answered by .G. 7 · 1⤊ 5⤋
It is a "ground" wire.
2007-11-28 05:58:15 · answer #6 · answered by Squat1 5 · 3⤊ 5⤋