encyclopedia

IN-SERVICE QUALIFICATION TEST (ISQT)

A test performed for a brief time on a limited amount of equipment (such as the new Automated Fare Collection (AFC) farebox or farecard encoders) provided by the AFC contractor to evaluate its performance prior to exercising the option to…

INBOUND

A direction of travel from an outlying area toward the central business district (CBD). (As used by MTA Operations, the direction is toward the Los Angeles CBD.)

INBOUND TRACK

The track or tracks upon which a train normally approaches a station. Note that for a multi-tracked rapid transit system, a station can have two inbound and two outbound tracks.

INCENTIVE CONTRACT

A fixed-price or cost-reimbursement type contract which provides for relating the amount of profit or fee payable under the contract with the contractor’s performance in order to obtain specific procurement objectives.

INCENTIVE-DISINCENTIVE PROVISION

A pay adjustment schedule that functions to motivate the contractor to provide a high level of quality.

INCIDENT

Any event or occurrence that did or could have resulted a in bus or rail accident, injury, fatality, property damage, environmental release, near miss, endangerment, or adverse reaction.

INCLINED PLANE RAILWAY

A special type of tramway vehicle modified to run on rails so that its passenger seats remain horizontal while its undercarriage is angled parallel to the slope. It is used for steep gradients. (TRB)

INCREMENTAL COST (INCREMENT COST)

The net change in dollar costs that is directly attributable to a given decision or proposal when compared with some other alternative (including the existing situation or the do-nothing alternative). (TRB)