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Transportation

Any mode or method of locomotion that serves to move people, goods or services from one location to another.

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Transportation > Railway

brake shoe

Transportation; Railway

Synonymous with brake block.

unbalance speed

Transportation; Railway

Traveling through a curve faster than balance speed. This may also be expressed as the curve being under elevated for the speed. The amount of reduction in elevation from balanced ...

undercutter

Transportation; Railway

Production machine that removes the ballast from the track in one continuous operation.

uniform code of operating rules

Transportation; Railway

An operating rules book formerly used in the U.S.A.

unit train

Transportation; Railway

A freight train consisting of carloads of the same commodity moving from origin to one destination, on one day from one shipper to one consignee on one bill of lading.

v-max

Transportation; Railway

The maximum speed, based on a mathematical formula, permitted on a curve based on the average curvature and average superelevation.