Traffic and signalling flows within the base station subsystem ( BSS ) and network switching subsystem ( NSS ) may also be identified as uplink and downlink.

Traffic lights, which may also be known as stoplights, traffic lamps, traffic signals, signal lights, robots or semaphores, are signalling devices positioned at road intersections, pedestrian crossings and other locations to control competing flows of traffic.

The European Rail Traffic Management System is an EU initiative to create a Europe-wide standard for train signalling.

Machynlleth is home to the signalling centre that will control the new European Rail Traffic Management System ( ERTMS ) on the Cambrian Line.

Network Rail plans to install European Rail Traffic Management System ( ERTMS ) in-cab signalling on the Great Western line: this is a pre-requisite for the new Super Express trains to run at 140 mph ( 225 km / h ).

* Railway signalling: Centralized Traffic Control ( CTC )

* Railway signalling: Centralized Traffic Control ( CTC )

GSM-R is part of the new European Rail Traffic Management System ( ERTMS ) standard and carries the signalling information directly to the train driver, enabling higher train speeds and traffic density with a high level of safety.

* Traffic flow, the mathematical study of traffic flows

Traffic flows at or above the posted speed limit and all motorists have complete mobility between lanes.

Traffic flows satisfying Wardrop's second principle are generally deemed " system optimal " ( SO ).

Traffic officers are employed by the Highways Agency and maintain traffic flows on trunk roads and some bridges and tunnels.

Traffic that goes straight at this intersection flows onto Route 300.

Traffic flows through only one tunnel, which carries traffic both ways, with each direction allocated only one lane.

Traffic flow around the smaller, inner roundabout is counter-clockwise, and traffic flows in the usual clockwise manner around the five mini-roundabouts and the outer loop.

Traffic flows on the A303 between Amesbury and Winterbourne Stoke ( the section including Stonehenge ) are above the capacity of the road and the Highways Agency expressed concern about safety on this road and the A344.

Traffic grooming is the process of grouping many small telecommunications flows into larger units, which can be processed as single entities.

Traffic flow has been improved, but underground parking has been reduced by 25 % and surface parking has been almost entirely converted into a pedestrian mall which flows into the surrounding urban landscape.

Traffic from the airport and Route 1A towards downtown Boston and I-93 northbound normally flows in the older, parallel Sumner Tunnel, where a $ 3. 50 toll is collected ( raised from $ 3 on January 1, 2008 ).

Aerial view looking SE Traffic flows thus had only a few hundred feet to weave through each other until c. 1955, when the Maze was enlarged to prepare for the four freeways that converged there a few years later.

* Traffic flows on the left side, instead of on the right.

Traffic flows one-way southeastward from Bishopsgate down the modern Houndsditch, which continues forward into St. Botolph Street, connecting to Aldgate High Street or Whitechapel High Street.

Traffic of smaller vessels at Elbląg is within the river and very marginal, while larger vessels cannot reach the open Baltic Sea because the channel, once built in East-Prussia to go through the peninsula, has belonged to Russia since 1945.

* Sector ( Air Traffic Control ), a three dimensional zone within controlled airspace in which aircraft are under the control of a specific air traffic controller.

Traffic within the city itself is restricted, with some principal roads being completely pedestrian areas.

A model aircraft site operates within its Air Traffic Zone, operating large model aircraft.

Both Port Control centres operate the same system for coordinating traffic within the PLA's jurisdiction of the Thames, known as Vessel Traffic Services ( VTS ).

Traffic for the Channel Tunnel and Folkestone leaves at the junction with the A260, and shortly after this junction the A2 loses its dual carriageway status, regains it, and loses it again within a few miles.

One site operates within its Aerodrome Traffic Zone ( radius )

As of April 15, 2010, according to Alexa. com, Sina. com. cn was 14th in terms of Top Site rankings and third in terms of Traffic Rank within China.

Traffic within Hamersley is distributed by a number of backbone streets, of which the main ones are Eglinton Crescent, Belvedere Road, Rannoch Circle, Blissett Way and Vickers Street.

* Vancouver Traffic Authority, a department within the Vancouver Police Department responsible for directing traffic and enforcing traffic-related laws.

A majority of the Fairoaks Aerodrome Traffic Zone ( ATZ ) is situated within the London Control Zone ( CTR ), therefore special procedures are in place to enable flights to depart and arrive at Fairoaks without the need to contact Heathrow Radar.

For example, in New York State, the Vehicle and Traffic Law permits red light cameras only within cities with a population above 1 million.

The village is located within the borough of Fareham and is the site of the London Area Control Centre ( LACC ) and the London Terminal Control Centre ( LTCC ) part of National Air Traffic Services Air Traffic Control Centre and also the last remaining example of a Victorian steam-powered brickworks, located at Bursledon Brickworks.

About 24, 000 officers, that is almost a quarter of police personnel, work within the Traffic Police ( Polizia Stradale ), Railroad Police ( Polizia Ferroviaria ), Postal and Telecommunications Police ( Polizia Postale e delle Telecomunicazioni ) and Border and Immigration Police.

An Operational Support Facility ( or OSF ) is an organization within the Federal Aviation Administration ( FAA ) that modifies software and / or special purpose databases for Air Traffic Control systems.

Traffic sources which are aware of a traffic contract may apply traffic shaping to ensure their output stays within the contract and is thus not discarded.

The Federal Systems Rockville campus was merged with other air traffic management businesses within the newly formed Lockheed Martin Federal Systems to become Lockheed Martin Air Traffic Management.

Lying ( like the E 13 and E 32 ) completely within the United Kingdom, no part of the E 24 is signed as such, the UK authorities never having implemented the provisions for the indication of European route numbers contained in annex 3 of the 1950 Declaration on the Construction of Main International Traffic Arteries signed in Geneva by Belgium, France, Luxembourg, the Netherlands, and the United Kingdom ( later joined by 18 other countries ) on 16 September 1950.

Higher levels of Air Traffic Advisory and Control services may be available within certain portions of airspace within a FIR, according to the ICAO class of that portion of airspace ( with regard to national regulations ), and the existence of a suitably equipped authority to provide the services.

The building was also the home to the Air Traffic Control Evaluation Unit, responsible for developing technology used within the service.

Metro Toronto Roads and Traffic ( later Metro Transportation ) was a department within the former Regional Municipality of Metropolitan Toronto.