VS-PLUS
Encyclopedia
VS-PLUS is a control method for road intersection
controlled by traffic lights. The traffic lights are connected to a controller where VS-PLUS runs as a separate process.
The software is best suited for traffic-actuated control of an intersection. In order to detect the traffic, a sufficient number of detectors must be connected to the controller. The detector signals are typically scanned 10 times per second.
The software is suited as well for implementing public transport priority systems.
VS-PLUS does not provide a programming environment but allows the traffic engineer to parametrize the control. It uses an abstraction model for the necessary parameters such as "desired priority" that can be set as a parameter. VS-PLUS supports the North American NEMA software standard for intersection control.
Due to the parametrization capabilities the software can communicate with central traffic computers and implement their current stategy by parameter changes. This enables re-coordination of a Green Wave
still keeping the local optimizations.
During development and test of the parameters, the control can be simulated on a PC using a microscopic traffic simulator (as VISSIM
, AIMSUN
, or Paramics).
Intersection (road)
An intersection is a road junction where two or more roads either meet or cross at grade . An intersection may be 3-way - a T junction or fork, 4-way - a crossroads, or 5-way or more...
controlled by traffic lights. The traffic lights are connected to a controller where VS-PLUS runs as a separate process.
The software is best suited for traffic-actuated control of an intersection. In order to detect the traffic, a sufficient number of detectors must be connected to the controller. The detector signals are typically scanned 10 times per second.
The software is suited as well for implementing public transport priority systems.
VS-PLUS does not provide a programming environment but allows the traffic engineer to parametrize the control. It uses an abstraction model for the necessary parameters such as "desired priority" that can be set as a parameter. VS-PLUS supports the North American NEMA software standard for intersection control.
Due to the parametrization capabilities the software can communicate with central traffic computers and implement their current stategy by parameter changes. This enables re-coordination of a Green Wave
Green wave
A green wave is an intentionally induced phenomenon in which a series of traffic lights are coordinated to allow continuous traffic flow over several intersections in one main direction....
still keeping the local optimizations.
During development and test of the parameters, the control can be simulated on a PC using a microscopic traffic simulator (as VISSIM
VISSIM
VISSIM is a microscopic multi-modal traffic flow simulation software. It is developed by PTV Planung Transport Verkehr AG in Karlsruhe, Germany. The name is derived from “Verkehr In Städten - SIMulationsmodell”...
, AIMSUN
Aimsun
Aimsun is an integrated transport modelling software, developed and marketed by TSS - Transport Simulation Systems based in Barcelona, Spain.Aimsun software is used by government agencies, municipalities, universities and consultants worldwide for traffic engineering, traffic simulation,...
, or Paramics).
See also
- Traffic engineeringTraffic engineering (transportation)For the engineering of communications and computer networks, see Teletraffic engineering.Traffic engineering is a branch of civil engineering that uses engineering techniques to achieve the safe and efficient movement of people and goods on roadways...
- Road traffic control