modelling link gradients

The latest in PJA’s series of technical blogs for microsimulation modelling focuses on the calculating and modelling of link gradients. As with all of our…

phil jones leads historic welsh 20 mph speed limit change

Our Chairman Phil Jones has helped make history after Welsh Parliament passed a resolution to introduce a national 20 mph default speed limit. In a…

Our new Manchester office

We are delighted to have opened an office in Manchester city centre, in the UK, appointing transport planning expert Chris Sibthorpe as director. The new…

Urban Flare & Urban Merging Driver Behaviour

Carrying on PJA’s series of technical blogs for microsimulation modelling, our next topic focuses on the modelling of flares and merges in urban areas. As…

Standardised Speed Distributions – Turning Radii

  PJA’s latest technical blog focuses on the use of speed distributions for different turning radii in microsimulation models. This follows on from the previous…

COVID-19 – Business Continuity at PJA

We would like to reassure all our clients and partner organisations that PJA will be able to provide continuity of service throughout this period of…

London Collective

PJA is backing the London Collective – a new collaborative approach to city making which enables built environment experts and creatives to work together. Set…

Standardised Speed Distributions

Following on from our posts on Dynamic Assignment and Convergence, we wanted to share our next modelling methodology. This focuses on standardised speed distributions used…

VISSIM convergence

Introduction Following PJA’s attendance at the PTV User Group in London on 4th November 2019, one of the key messages that we took away from…