Y

A letter rating for tires to indicate that they are theoretically rated for speeds up to 300 kph (186 mph), as in P220YR15.The next higher rating is Z and the one lower rating is W

Yamaha

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Yamaha

A Japanese motorcycle manufacturer

Yard

See

• Breaker's yard
• Scrap yard

Yard Horse

A tractor for moving trailers short distances in a truck yard or terminal compound. Also called switching tractor, yard tractor, trailer spotter, yard dog, and linehauler. Equipment is manufactured and sold for such exclusively off-road use, but sometimes old, spare, or unroadworthy tractors are used.

Yarding

Method of transport from harvest area to storage landing.

Yard Jockey

A person who operates a Yard tractor

Yard Mule

Special tractor used to move trailers around a terminal, warehouse, distribution center, etc. Also called a Yard Tractor

Yard sale

A bicycle term borrowed from skiing where a serious crash leaves all your various wares -- water bottles, pump, tool bag, etc. -- scattered as if on display for sale.

Yardstick

Trucker slang for Mile markers on the road side as in "There's a smokey advertising at the 75 yardstick."

Yard Tractor

Special tractor used to move trailers around a terminal, warehouse, distribution center, etc. Also called a Yard Mule

Yarn

See

• Ballooning Of Yarn

Yaw

The rotation about a vertical axis that passes through the car's center of gravity.

Yaw acceleration

A steady increase in the yaw angle

Yaw angle

The angle of deviation between a vehicle's longitudinal axis and its true direction of motion, i.e., the difference between the direction a vehicle is pointing when cornering and the direction in which it is actually moving

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