You are in: JCT > Software > LinSigV3

Logged in as Guest: login / register

LinSig 3

A Design and Assessment Tool for Traffic Signal Junctions and Urban Networks

LinSig 3 is a major new version of LinSig and has been available since mid 2009. It adds many new features and extends the software in a number of significant directions.

Since its original release in 1985 LinSig has been the UK industry standard software for the assessment and design of traffic signal junctions. Its unique attribute was and still is the combination of both traffic and controller modelling for comprehensive traffic signal design. The software has been instrumental in advancing UK phase (signal group) based methods of control giving maximum safety and efficiency for all road users.

One common application of LinSig is rapid testing of new traffic signal schemes which involve large numbers of alternative options. LinSig allows different options to be quickly modelled and rejected or taken forward possibly to more detailed resource intensive modelling such as microsimulation. Other common uses of the software include the interactive design of signalled roundabouts for which it is strongly established in the UK and overseas, transport assessments for land development and detailed modelling of networks of signal, priority and roundabout junctions.

LinSig 3.1 is a significant upgrade to Version 3 and was released in May 2011. It is available free of charge to all LinSig 3 users with Software Support.

LinSig 3.1 - introduced in May 2011 - builds on LinSig 3 which was first released in June 2009. LinSig 3 originally introduced major new modelling improvements including the ability to model larger networks, lane by lane modelling, Pedestrian modelling, equilibrium assignment and matrix estimation. LinSig 3.1 added significantly to this with a new simplified graphical method of defining traffic flows, the ability to model different cycle times in the same network, improved bus modelling, bonus green adjustments on individual lanes and a range of other new features.

LinSig 3.1 is also compatible with the new LMAP (LinSig Model Audit Procedure) procedure developed by Transport for London as part of their Modelling Guidelines. LMAP defines a standard procedure for auditing LinSig network models, making LinSig one of only three network modelling packages with its own MAP procedure. As part of the development of LinSig 3.1 JCT consulted closely with TfL incorporating a number of specific features at their request.

LinSig 3.2 is a significant upgrade to Version 3 and was released in May 2012. It is available free of charge to all LinSig 3 users with Software Support.

LinSig 3.2 includes a range of new features including modelling improvements and features designed to assist users in Australia and New Zealand.

These new features include a new SCATS™-based controller model, SCATS™ traffic flow data import, improved modelling of double lane right turns, improved capability to model storage in front of the stopline when short lanes are present, and the ability to obtain separate capacity values for long and short lanes.

Further information on LinSig:


Site search


Upcoming courses

12 Mar 2024: LinSig3 : Online Networks and Advanced Features Computer Workshop ...more

13 May 2024: Understanding and Optimising Mobile Technologies for traffic and transportation applications ...more

13 May 2024: Practical Application of MOVA Computer Workshop including the use of MOVA Tools and MOVA Simulation ...more

14 May 2024: Introduction to Traffic Signals ...more

21 May 2024: Online Basic Introduction to Traffic Signals for SCATS based regions (€90 discount for ITS Ireland members) ...more

...view full schedule

...view course descriptions


Subscribe to email updates

To subscribe to Course, Software or Symposium update emails, please click here