encyclopedia

TAG AXLE

A nonpowered vehicle axle that helps distribute the load. (TRB)

TAIL TRACK

Designated tracks auxiliary to the main line used for storage, reversing direction and other rail activities.

TAMP

To compact the ballast beneath the ties, usually after raising the track when there will be a void under the ties.

TAMPER

A power machine to tamp track, equipped with vibrating teeth or bars which are thrust into ballast and squeeze it under each tie. Most tampers are also equipped with power jacks to raise the track and a control system to…

TARGET MARKET

A specified segment of the potential or actual (transportation) market (or both) that has been analyzed and selected by a (transportation) provider so that a marketing mix (target marketing) can be directed toward this segment. (TRB)