London Collective

Standardised Speed Distributions

When developing a microsimulation model, one of the early steps is to ensure that the desired speed distributions used in the model are appropriate for the area and network modelled.

At PJA, we have a template which bases these initial distributions on two key datasets – the DfT’s ‘vehicle speed compliance’ tables and TfL’s speed profiles.

‘Living with Beauty’ Final Report published

On 30th January 2020 the ‘Building Better, Building Beautiful Commission’, the independent body set up to advise government on how to promote and increase the…

VISSIM Convergence

Dynamic Assignment in VISSIM

The use of dynamic assignment in VISSIM models can be considered a ‘dark art’, with very little content online which demonstrates how to go about this process and what the key elements are to look out for.

As a result, we wanted to share our thoughts and current methodology to a wider audience. We are aware that there is no ‘one best solution’ to undertaking dynamic assignment, but hope this helps to generate further debate and/ or improvement and provide some help to those who are looking for a starting point with dynamic assignment.

A year in our life #PJADidGood

With increased turnover, new team members, senior promotions and a new office, 2019 saw us continue to grow in strength and success. Helping to secure…

What inspires us? #TPDay2019

Transport Planning Day highlights best practice in putting people at the heart of transport plans and the significant contribution transport planners make to people across…

Expectation vs Reality of a transport planner

We asked one of our Graduate Transport Planning Consultants, Matt Wykes, what led him to want to pursue this career and what it’s really like…

Introducing Daniel Bent #TPDay2019

In the lead up to Transport Planning Day on 20th November we caught up with Daniel Bent, Transport Modelling Associate in our Birmingham office, to…