Modelling Expertise
We can develop and provide traffic models in LinSig, Transyt, TranEd, Arcady, and Picady and use these either to report on existing performance and capacity or predict future performance for traffic schemes and development.
JCT have over 40 years experience of preparing, auditing, and checking traffic impact evaluations from local authorities and developer consultants using LinSig, Transyt, TranEd, Arcady, and Picady.
As specialists in junction control, software training, junction design and audit, you can at all times be confident that our audit team have the expertise needed to give your projects the attention they deserve. In addition, and most importantly, all team members have a wealth of on-site experience observing and measuring traffic behaviour at junctions.



Our Services
Congested Junctions
There can be wide area benefits in tackling the worst bottlenecks in a road network. We welcome all enquiries relating to this, and will always give an initial opinion on what might be possible.
Geometric Design
We are well equipped to produce initial geometric layouts to go with our traffic modelling. Typically at 1:1000 scale with lane markings, these drawings can be included in reports, used in presentations, or taken as design input into larger road schemes.
Bus Priority
We have much experience in the modelling and design of bus priority at stand-alone junctions and within corridors. We have also worked extensively on tram priority.
Joe Bloggs
Peter Signalfan
Transport Assessments
Mitigating the impact of extra vehicle movements can seem impossible at certain junctions. We welcome the challenges that can arise, and are often able propose solutions.
Pedestrians and Cyclists
Provision for pedestrians and cyclists is often a major challenge at junctions. We have experience of all the options and have devised solutions at many difficult junctions.
Signalled
Roundabouts
We have considerable expertise in all work associated with signalled roundabouts going back to the first ever fully signalled roundabout in Nottingham in 1978, and our team have built a unique portfolio of techniques in the nearly 50 years since then for getting the best possible results.
LinSig 3 MOT
Give your LinSig Model the JCT MOT treatment today!
The LinSig 3 MOT is a streamlined audit service, where JCT will offer an independent review of a model. We provide a cost-effective service and give confidence to you that there are no significant errors – or if there are, provide confidence that any problems have been identified.
The model MOTs are popular with Local Highway Authorities as well as Transport Planners who want reassurance that their or no major flaws in their modelling before submitting their TA.
A LinSig 3 MOT includes:
The audit checklist will be provided as a pdf. However, it can also be provided as a protected Excel spreadsheet, where the Modeller can include comments on the issues raised.
Typical LinSig 3 MOT Costs (ex. VAT)
Single Junction (T-Junction / Crossroads), one stage stream:
MOT: £425
Update Model: £175
Follow-Up MOT: £225
Signal Network (2-3 junctions):
MOT: £725
Update Model: £295
Follow-Up MOT: £375
Signal Roundabout (up to 5 arms):
MOT: £645
Update Model: £245
Follow-Up MOT: £295
