Glossary

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Advanced traffic management system – ATMS
A tool that uses technology to monitor and improve the flow of vehicle traffic and safety on congested roadways.

Asset
Something that is useful or has value for example, a house is an asset; good health is a great asset.

Closed circuit television (CCTV) cameras 
The use of video cameras to transmit a signal to a specific place, on a limited set of monitors.

Congestion
A condition on a road that occurs as use of that road increases. It is characterized by slower speeds, longer trip times, and increased queues.

Gantry
A bridge-like overhead structure with a platform supporting equipment such as electronic signals, signs or cameras.

Intersection
A place where two or more roads meet.

Lane control sign
Electronic sign with three display options: changing the speed limit; closing a lane; directing drivers to change lanes.

Loop (telecommunication) 
Sending a signal on a channel and receiving it back at the sending terminal.

Median barrier
A protective divider that physically separates opposing traffic flows and helps stop vehicles travelling into opposing traffic lanes.

New Zealand Transport Agency – NZTA | Waka Kotahi
New Zealand Crown entity tasked with promoting safe and functional transport by land, including the responsibility for driver and vehicle licensing and investigating rail accidents. They also fund, together with local and regional government, local roads and public transport infrastructure and services.

Off-ramp
An exit lane for traffic from a main road, usually a motorway or highway.

On-ramp
An entrance lane for traffic to a main road, usually a motorway or highway.

Public transport
Bus transport is the main form of public transport in New Zealand. Auckland and Wellington also have suburban rail systems. Some cities also operate local ferry services. Aeroplanes are also part of the public transport network.

Radar
An object-detection system that uses radio waves to determine the range, altitude, direction, or speed of objects.

Ramp signal
A traffic light at the end of an on-ramp which directs traffic to enter a motorway at a rate that allows traffic to merge easily with the mainline flow.

Sensors
Count the traffic and the speed at which it's travelling.

State Highways 
Major national roads in a network. They consist of SH 1 running the length of both islands; SH 2-5 and 10-58 in the North Island, and SH 6-8 and 60-99 in the South Island. State highways are marked by red shield-shaped signs with white numbering.

Variable message sign
A large number of permanent and temporary message signs are located throughout the country, to provide real-time information for drivers while they are driving.

Wellington Traffic Operations Centre – WTOC
Located in Johnsonville. Its principal aim is to provide timely and accurate traveller information using NZTA’s network of Intelligent Transport Systems [ITS] of Camera’s and Message Signs across the lower North Island.