encyclopedia

GRADE

The ratio of rise to the horizontal distance. A 2% grade rises 2 feet per hundred feet of travel. Grades over one percent are significant on railroads, grades over 4% are very rare.

GRADE CROSSING

A term used to describe a physical arrangement of two transportation routes where there is possible physical interference between vehicles on each route. For example, a railroad crossing at street that requires the automobiles to stop to let a train…

GRADE CROSSING FLAGGER

Person assigned to unprotected grade crossings to flag trains.

GRADE CROSSING PROTECTION

A railroad crossing flashing light signal or automatic gate actuated by the approach of a train at a grade crossing. (TRB)

GRADE CROSSING TRAFFIC CONTROL DEVICE

Any form of protective or warning device installed at a railroad or transit guideway grade crossing for the protection of highway or street traffic. (TRB)

GRADE SEPARATION

A term used to describe a physical arrangement of two transportation routes which permits them to cross each other without any actual physical interference. For example, when a railroad crosses a highway on an overpass, it is said to be…

GRADUATED FARE

A fare that is proportional to the distance traveled (also known as mileage fare) or the length of time that a passenger may ride on a service. (TRB)

GRANT DIVERSION

Grant diversion means the use of funds that would otherwise be paid to a program participant’s family as a welfare grant to reimburse some or all of an employer’s costs for the wages and benefits paid to the participant, and…