Edgepedia

Traffic assignment

Traffic assignment is the final step of the four-step travel demand forecasting process, allocating origin-destination trips to routes through a road network to produce estimated traffic volumes on each link.

Traffic bollard

A traffic bollard is a short vertical post about 900 to 1200 mm tall that controls vehicle movement, protects buildings and pedestrians, and ranges from fixed posts to retractable, crash-rated designs.

Traffic calming

Traffic calming is the use of mainly physical road features, such as speed humps, chicanes, and street narrowings, to reduce vehicle speeds and improve safety for pedestrians and bicyclists.

Traffic classification (computer networks)

Traffic classification is the task of assigning network traffic to application, protocol, or service categories, per packet or per flow, for quality-of-service and security purposes.

Traffic collision

A traffic collision, also called a motor vehicle accident, is when a road vehicle strikes another vehicle, pedestrian, cyclist, animal, or object, killing about 1.16 million people yearly.

Traffic collision avoidance system

The traffic collision avoidance system (TCAS) is an aircraft avionics system that warns pilots of nearby conflicting traffic, with TCAS II directing vertical maneuvers against midair collision.

Traffic collision reconstruction

Traffic collision reconstruction is the forensic process of determining how a road collision happened, working backward from skid marks, vehicle damage, and event data recorder data.

Traffic cone

A traffic cone, also called a road cone or traffic pylon, is a cone-shaped device placed on roads or footpaths to temporarily redirect traffic around roadwork and hazards.

Traffic conflict technique

The traffic conflict technique (TCT) is a road safety method that measures near-collision events, called traffic conflicts, instead of waiting years for actual crashes to accumulate.

Traffic congestion

Traffic congestion, also known as traffic jams, is a condition in which excess vehicles on a roadway slow speeds below normal, often degrading into stop-and-go traffic.

Traffic count

A traffic count is a transportation engineering measurement of vehicles or pedestrians passing a point on a road, producing average daily traffic figures used for planning, design, and traffic management.

Traffic Engineering Handbook

The Traffic Engineering Handbook is a professional traffic engineering reference published by the Institute of Transportation Engineers, now in its seventh edition, co-edited by Anurag Pande and Brian Wolshon.

Traffic grooming

Traffic grooming is an optimization technique in WDM optical networks that aggregates multiple low-rate traffic streams onto shared high-capacity wavelength channels, reducing transponders, wavelengths, and overall network cost.

Traffic in Towns

Traffic in Towns is a British government report on motor traffic in towns, published in November 1963 and known as the Buchanan Report after its author, Colin Buchanan.

Traffic Information Service–Broadcast

Traffic Information Service–Broadcast (TIS-B) is a free, advisory-only aviation service in which FAA ground stations broadcast radar-derived traffic information to ADS-B-equipped aircraft within about 15 nautical miles.

Traffic light

A traffic light, or traffic signal, is a device at intersections and crossings that uses red, yellow, and green lights to assign the right-of-way to vehicles and pedestrians.

Traffic Message Channel

The Traffic Message Channel (TMC) is an application of FM Radio Data System that broadcasts real-time traffic and weather information as inaudible digital data, decoded by TMC-equipped navigation systems in the driver's language.

Traffic separation scheme

A traffic separation scheme is a ship routeing measure that uses one-way traffic lanes to separate opposing streams of marine traffic and reduce collisions in congested waters.

Traffic shaping

Traffic shaping is a network traffic-control technique that delays packets so a stream conforms to a configured rate, smoothing bursts rather than dropping excess traffic as policing does.

Traffic sign

A traffic sign, also called a road sign, is a sign beside or over a road that regulates, warns, or guides road users, standardized through national manuals.

Oct 3, 2026

Traffic Signal (2007 film)

Traffic Signal (2007) is a Hindi drama by Madhur Bhandarkar, third in his Page 3–Corporate trilogy, about beggars, vendors, and criminals around a Mumbai traffic signal; it won the National Film Award for Best Direction.

Traffic signal warrant

A traffic signal warrant is a quantitative criterion in the MUTCD, covering volume, delay, and crashes, used to decide whether a traffic signal is justified.

Traffic state estimation

Traffic state estimation (TSE) is a transportation engineering method that infers real-time flow, density, and speed on road segments from sparse sensor and probe vehicle data.

Traffic wave

A traffic wave is a propagating disturbance in a stream of vehicles, spanning the kinematic waves of the 1955 Lighthill–Whitham theory and the shock waves marking queue edges.

Trafficante crime family

Trafficante crime family: Tampa, Florida Mafia family led by Santo Trafficante Sr. and Jr., at its peak from the 1940s to the 1960s, built on bolita gambling, Cuba casinos, and CIA-linked Castro plots.