The system that challenges and validates assumptions about the transport impacts of new developments

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All TRICS user organisations are invited to take part in our annual user survey, which can be accessed via the following link.

Annual User Survey

This is much valued feedback, and will assist the TRICS team in developing our 2022 data collection programme. You can also provide your ideas for the future of the TRICS system as we develop the TRICS 8 re-redesign.

23rd March 2021

TRICS Consortium Limited are pleased to inform all organisations involved in the commissioning and undertaking of TRICS surveys, as well as all TRICS users, that TRICS site visits and surveys will resume from 12th April 2021.

This is subject to the partial lifting of lockdown restrictions in England (the opening of non-essential shops) taking place on that date, which reduces the level of restrictions down to beneath our threshold for the suspension of TRICS survey programmes.

Although we continue to monitor the situation closely and our plan is subject to change whenever necessary, our current plan is to raise new agreements for the SAM surveys we currently have on our books (plus any new surveys that are added in the interim period) on 1st April 2021. The agreements would then be forwarded to our SAM clients for signing, with site visits then arranged on a first come first served basis (meaning the receipt of signed copies of the agreements being received).

This gives us a good opportunity to fit some SAM surveys into the Spring survey window that runs until the end of June. As per our February statement, I cannot guarantee that any survey will be undertaken during the Spring window. It is important to note that it will be essential to receive a quick turnaround in terms of the signing of survey agreements and the authorisation to proceed with surveys once quotes have been supplied, with any significant delays meaning that surveys would need to be moved into the Autumn window.

Our plan also allows for the first surveys in our regular regional data collection programme commencing in the second half of April, and work is underway to achieve this. With regards to surveys outside of England we will make comparative assessments on a regional basis moving forwards. We remain on track to deliver a full regional programme of traffic and multi-modal surveys in 2021, and the team are ready to get to work and deliver this for our users.

Once again, we would like to thank everyone in the TRICS Community for their support and understanding through these turbulent times. Our goal is to provide you with great quality data covering a wide range of regions and development types throughout 2021, and we certainly look forward to achieving this.

3rd March 2021

TRICS Consortium Limited are pleased to confirm that the 2021 TRICS User Meeting will be taking place on Tuesday 28th September 2021 at BMA House in London.

This is the venue that was originally booked for the 2020 event that did not end up taking place, but this week we have secured our booking for September and we really look forward to meeting with the TRICS Community again. Please put this date in your calendars and further details will follow in due course.

In terms of booking arrangements our on-line system is scheduled to go live in June. This allows us plenty of time to monitor the situation in the UK and to put together our programme of presentations and interactive sessions (for which we already have plenty of ideas shortlisted). Our booking as it stands is without social distancing, so we really do hope we can return to a “normal” User Meeting this year after what would have been a gap of over two years, with around 100 attendees from across the UK and Ireland. However, should a form of social distancing be required the venue can adapt accordingly. That would mean a reduced capacity, so it is good that we are able to wait until June before we can have better information on what the situation is likely to be.

As usual for this event, in addition to the presentations in the main room there will be a split session in the afternoon, with a full system demonstration of TRICS taking place alongside an open interactive discussion forum, so this means the event will be good for both new and experienced TRICS users alike. We are also pleased to confirm that places at the event will be free to our users (one from each registered licence holding office), on a first come first served basis. Also please note that due to the User Meeting taking place in September this year there will be no TRICS Training & Development Forum taking place in November. However, we fully intend to revert back to our usual June User Meetings and our November Training & Development Forums from 2022.

All of the team here at TRICS look forward to resuming our popular events once again and to meeting our users at what is always an informal yet productive get together that always brings great feedback and new ideas to our projects.

22nd February 2021

TRICS Consortium Limited are pleased to announce the publication of our Guidance Note on the Practical Implementation of the Decide and Provide Approach for future development planning, which is freely downloadable from our website at

Decide and ProvideThis document is the result of a broad and thorough collaborative effort from different planning perspectives, including members of the TRICS team, local highway authorities, the academic profession, the Department of Transport and independent consultants. Now, more than ever, we need to reassess approaches to transport and development planning, and the collaboration behind this project has allowed us to present the idea of the new Decide and Provide approach, whilst also providing strong evidence, using the wealth of historic survey data within TRICS, of trip generation trends over time, which themselves illustrate that the principles behind this new approach are grounded in hard data. It has become clear from our analyses that there has been a reduction in vehicular trip generation over time for key land uses, and that we should adapt the TRICS system and introduce new elements into its analytical features to allow a new type of trend interrogation of the database, whilst keeping TRICS a vital and integral part of assessing future trip generation estimates.

For over 30 years TRICS has been instrumental in our planning processes, and as an organisation we are very pleased to be playing our own important role, along with our collaborative partners, in addressing one of the most important questions in transport and development planning today. The work that has been undertaken has shown that TRICS will continue to be a fundamental element of the new Decide and Provide approach. We have always been an organisation that can adapt and evolve over time and participate in addressing important issues with the experience of our team in trip generation analysis, data collection programmes, system development and research, and forward thinking. We are ready and willing to make the necessary changes and to show our users how TRICS could be used alongside the new Decide and Provide approach, providing essential guidance which has started with the publication of this document. We need to make it clear that publication of this document should be regarded as the first stage of this journey. There is plenty more work to do, and we look forward to more of our users and other organisations coming on board to join our growing collaboration towards a new future for development planning that aims to face the industry’s (and the nation’s) challenges head on with positive solutions.

There will be a great need for a new environmental approach as we emerge from the pandemic, especially when it comes to the decarbonisation of transport. We live in an uncertain world, and the question of uncertainty can clearly be extended to transportation and the future of development planning. The new Decide and Provide approach embraces that uncertainty, and offers a clear and distinct method for how the practices of our industry should and can change, and TRICS intends to be leading the way in terms of providing practical and solid survey data analysis solutions. Through an extended period of discussion, data analysis and application of ideas that are firmly rooted in the challenges that lay ahead, we can all implement a new forward-thinking approach to development planning and Transport Assessments fit for the 21st Century.

We look forward to receiving your much welcomed feedback and to working with you all in making these changes happen.

26th February 2021

TRICS Consortium Limited invites all of its user organisations to participate in our annual TRICS User Survey, which is now live. To access the survey, which should only take a short time, please go to the following link.


As users of TRICS, your opinions are always of great value to us. We don’t see our survey as a marketing exercise – you can have your direct say in the future of TRICS, its data collection programme, system development and associated projects. It is a very important time for us here at TRICS, as we make preparations for a major system re-write, TRICS 8. As we come out of lockdown we want to hit the ground running with new projects, a dull regional survey programme and system development and enhancement, and we have always valued your feedback, which we are asking for once again to ensure that the ongoing development of TRICS is truly interactive.

Over the years, many ideas in response to our user surveys have become actual system improvements, and we want this to continue. We aim to ensure that the whole experience of using TRICS is hassle-free, with an intuitive and user-friendly system that makes your job easier. The best way to do this is through direct engagement with our TRICS Community, consisting of over 360 organisations across all parts of the UK, Ireland and now in Australia and New Zealand. It is this truly inclusive and interactive way that has seen the system evolve over three decades, and will see it continue to improve and develop through years to come. So please get involved and have your say in the future of TRICS today.

This year we are undertaking our survey in two parts. The first is through this direct link to the online survey dealing with the technical and data collection elements of the system, and the second covers your views on TRICS Consortium Limited and the general user-friendliness of TRICS, which is being undertaken by direct phone communication (one of our team will be in touch directly with users to ask a few questions that will only take around 5 minutes of your time).

You will see that the final question in the online survey invites users to suggest questions to be considered for inclusion in an open forum session at this year’s annual 25th TRICS User Meeting, which is taking place on 28th September. We look forward to seeing what questions the TRICS Community would like to see raised for discussion, and these can cover anything associated with the TRICS project, so please feel free to contribute to this.

We look forward to receiving your comments and ideas. Thank you for your time, it is as always greatly appreciated by everyone here at TRICS.

10th February 2021

In recent weeks the TRICS team have been assessing the 2020 changes to the TCPA Use Classes so that the TRICS database can be updated accordingly for the release of TRICS version 7.8.1 at the end of March 2021. We would like to take this opportunity to provide a summary of how our system is adapting to take into account all changes made to the use classes last year.

The new use class options will be present in the March update of the database, with every survey site allocated one of the revised use classes or shown as “n/a” or “Not Known”. Most of the TRICS land use sub-categories have been easily converted on a site-by-site basis, but we are unable to allocate any of the new use classes to any office or industrial based TRICS sub-categories due to the subjectivity of the new B2 and E(g) use class definitions, in particular the question “of being of detriment to a residential area”. We imagine that there may be differing interpretations in terms of allocating any particular development to either a B2 or E(g) use class, and that various parties may disagree on any such allocations, with potentially there being a number of disputes moving forwards. As TRICS does not have a remit to make subjective interpretations of this nature, we have decided that all office and industrial sites in the database (including vehicle garages) are to be tagged in our database with the use class of “Not Known”. If at some point in the future we are in receipt of further, more definitive parameters for the allocations of TRICS sites to B2 or E(g) use classes that do not require any subjective opinions, then we will have everything we need set up to swiftly allocate either use class to our office and industrial sites accordingly. In the meantime, we continue to encourage our users to follow our TRICS Good Practice Guide and to, as always, exercise proper professional judgement.

It should also be noted that drive-through sites in the database (fast food and coffee shops) have also been allocated as having a use class of “Not Known”, as we cannot differentiate on a site-by-site basis whether most consumption takes place on or off a premises. And for convenience stores of 280m2 GFA or under we are unable to establish if there are any similar stores within 1,000 metres walking or road distance, as all of our surveys are historical to varying degrees (and therefore the smaller stores have also been allocated a use class of “Not Known” accordingly).

Users should also note that we will be providing updated use class definitions and use class/TRICS land use sub-category comparison documents within the system (as PDF’s), plus we will be adding a further note to explain the reasoning behind the sites that are being tagged as “Not Known” (as explained above) and “n/a” (where any site is not defined at all by the new use classes). And whereas in the current version of TRICS (version 7.7.4) sites within our Employment land use sub-categories show a sub-split between five use classes, in the March release these sub-splits will be renamed as to not directly represent any use classes that would have been superseded by the changes made in 2020 (the sub-splits will therefore become independent of the use class system).

We hope that this answers any questions that our users may have at this time about how TRICS is dealing with the changes to use classes. Upon the release of TRICS version 7.8.1 at the end of March we shall be providing a similar note to this within the system release email. In the meantime, if anyone requires any further clarification on our position with regards to the new use classes please feel free to contact a member of the TRICS team.


25th November 2020

TRICS Consortium Limited are pleased to announce the publication and availability of a major update to the TRICS Good Practice Guide for 2021.

Following a period of consultation with members of the TRICS Community followed by discussions amongst the TRICS team, this important document has been fully revised and expanded to over 60 pages, and as a result is a much more comprehensive source of guidance for anyone undertaking work using TRICS, and for those tasked with auditing reports produced using the system and included in documents such as Transport Assessments.

Therefore, this 2021 version of the guidance is now live, and instantly supersedes the 2016 version of the document that is currently included in the TRICS Library module of the current 7.7.3 version of the system. TRICS version 7.7.4, which goes live on 18th December 2020, will include the 2021 document within the Library module.

All sections of the document have been fully revised and expanded to provide greater clarity, plus there are new sections covering the following:

  • How TRICS defines Gross Floor Area (GFA)
  • The Method of TRICS Trip Rate Calculations
  • Understanding the TRICS Vehicle Occupants Count
  • Understanding the TRICS Servicing Vehicles Count
  • Appendix: A worked example of a Trip Rate Calculation scenario

We consider this document to be essential reading for anyone involved with producing or auditing TRICS reports, as it is often used and quoted up to Public Inquiry level. It provides everyone with a greater understanding of TRICS in numerous ways, as well as providing a useful source of awareness raising in the very nature of TRICS data and the way in which it should be used and presented. And it can be accessed immediately HERE. We look forward to receiving feedback from members of the TRICS Community and to continuing to update this guidance on an annual basis.