Tacit Glossary

A

Axle Weight: The weight supported by an individual axle, typically measured to ensure compliance with legal weight limits.

B

Bill of Lading (BOL): A legal document that details the type, quantity, and destination of goods being transported. It serves as a receipt and contract between the shipper and carrier.

C

CDL (Commercial Driver’s License): A license required to operate commercial vehicles such as tractor-trailers, buses, and large trucks.

Carrier: A company or individual that transports goods or passengers.

Deadhead: Driving a truck without a trailer, often returning from a delivery or to pick up a new load.

D

Dispatch: Instructions given to drivers about loads, routes, and schedules by the carrier or dispatcher.

E

E-log (Electronic Logbook): Digital record-keeping system used to track a driver’s hours of service and compliance with regulations.

F

Fifth Wheel: The coupling device mounted on a tractor that connects it to a semi-trailer.

G

GVWR (Gross Vehicle Weight Rating): The maximum weight a vehicle can safely carry, including cargo and passengers.

H

Hazmat (Hazardous Materials): Materials or substances classified as potentially harmful or dangerous during transportation.

I

IFTA (International Fuel Tax Agreement): An agreement between states and Canadian provinces to simplify fuel tax reporting for interstate carriers.

J

Jackknife: A situation where the trailer of a truck swings outward, forming an acute angle with the cab, usually resulting in loss of control.

K

Kingpin: The pin on a trailer that locks it onto the fifth wheel of the tractor.

L

LTL (Less Than Truckload): Shipping method for smaller loads that do not require an entire trailer.

M

Mileage Pay: Payment to drivers based on the number of miles driven.

N

Non-CDL Truck: A truck that does not require a commercial driver’s license to operate, usually lighter vehicles.

O

Over-the-Road (OTR): Refers to long-distance driving, typically across state lines.

P

Pallet: A portable platform used for storing and transporting goods, often lifted by forklifts.

Q

Qualifier: A person who ensures the safety and compliance of a trucking company’s operations.

R

Reefer: Refrigerated trailer used for transporting temperature-sensitive goods.

S

Scale House: A facility where trucks are weighed to ensure they comply with weight regulations.

T

Tandem Axle: A set of two axles placed close together to evenly distribute weight on the trailer.

U

USDOT Number: A unique identifier assigned to commercial vehicles by the United States Department of Transportation.

V

VIN (Vehicle Identification Number): A unique code used to identify individual vehicles.

W

Widowmaker: Slang for the fifth wheel release handle, which, if not properly handled, can cause injury or accidents.

X

X-dollies: Convertible dollies used for transporting containers or trailers.

Y

Yard Jockey: A person who moves trailers or containers within a yard or terminal.

Z

Zipper Merge: A technique where drivers merge in a zigzag pattern when lanes are reduced, improving traffic flow.

These terms represent a fraction of the extensive vocabulary used in the trucking industry, each crucial to understanding and navigating the complex world of transportation and logistics.

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