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

It is the UK and Ireland’s national system of trip generation analysis, containing over 7150 directional transport surveys at over 110 types of development. TRICS® was founded and is owned by 6 County Councils in the south of England, collectively the TRICS® Consortium. However, its annual collection programme covers the whole of the UK and Ireland, across 17 defined regions.


This is reflected in the national spread of member organisations across each of these regions, which we know as the TRICS® Community.

This is the website for that community, as well as being a resource for anyone interested in the field of trip generation analysis. Please have a look around – we look forward to receiving your feedback.

On behalf of TRICS® Consortium Ltd,
I would like to welcome you to the
home of the TRICS® Community.

TRICS® is the national system of trip generation analysis for the UK and Ireland, an essential method of measuring the likely transport generated by new developments. I am pleased to be part of the management group that delivers this integral and established feature of the transport planning and development management process.

2015 sees a milestone in the TRICS® journey. On 1st January 2015 the project was for the first time run by its own company. The creation of this new company will enable the current system to be promoted in foreign countries and will also enable the team to develop some new and exciting products to serve the Transportation Industry. Both these areas of work will enable increased development of our current system and help to improve and expand our data collection programme; all to the benefit of our current members and the wider transport planning industry.

From the outset in 1989, we determined that the users should have an ongoing and direct input into how the project was to be developed, and this unique working relationship with the TRICS® Community has culminated in many upgrades and re-writes over the years, with major milestones being the development of a version of TRICS® for Windows, the introduction of the live system on the web, and, more recently, the major upgrade of the user interface that is TRICS® 7.

Meet the team
Nick Rabbets (Managing Director)
020 3657 2184/ 07500 043 360

Ian Coles  (Project Manager)
020 3657 2185  07799 778 878
Owen Edwards (Assistant Manager)
020 3657 2187/ 07765 383 630

Siddika Begum  (Operations Officer)
020 3657 2186
Ben Brown (Technical Officer)
020 3927 8488/ 07826 180 609

Tracey Spencer  (Operations Officer)
020 3657 2188

User training & demonstrations

The sessions consist of a full system demonstration, in which all parts of the system are covered. This lasts approximately one hour, and is then followed by an optional "hands-on" session where attendees can practice using the latest version of the TRICS® software with specially-designed "test sheets". This is designed to introduce new users to the system.

Each demonstration/training session costs £500 + VAT, and is free of charge to TRICS® member universities. Organisations hosting sessions are asked to provide a computer and projector for the demonstration part of the session, and also to provide the computer facilities for the training part of the session. Non-member organisations will be provided with temporary access to the TRICS® system for the purposes of the session.

One month free trial

A free trial of TRICS® will allow you to view the system's features and the ever-expanding database of transport surveys which TRICS® offers. It is ideal for those interested in purchasing a software licence, allowing them to evaluate the system in full before committing to membership. The only restriction during the trial period is that you cannot use TRICS® for commercial purposes, with the trial being for evaluation purposes only. So why not try the system out before you become a member?

Many new members of the TRICS® Community originally took up this offer, which provides trialists with full use of the latest version of the system, along with unlimited user support. The TRICS® Team can set up your free trial today, it's quick and it's easy - contact us to request your free trial

SAM has been developed by TRICS® as a system of monitoring and assessing the effectiveness of travel plans. It uses long established TRICS® methods of multi-modal data collection enhanced with comprehensive information on travel plan details to produce robust travel plan survey results. Click here for more information.

TRICS office is closing over the festive
period, for the purposes of moving from
5pm on 22 December 2015 to 9am on
5 January 2016.

Our new address as of 5th January 2016 will be as follows:
TRICS Consortium Limited, Office 205, 2 Queen Caroline Street, Hammersmith, London W6 9DX

Our new numbers as of 5th January 2016 will be:
02036572184 - Nick
02036572185 - Ian
02036572186 - Siddika
02036572187 - Owen

Full list of research publications

TRICS® members receive copies of reports via the Library module of the system.

TRICS® member organisations can access PDF's of each research report from within the TRICS® Library as and when new updates of the system go live (i.e. quarterly). These reports are also available to non-members at the rates indicated for each individual report.

Upon ordering TRICS® research reports an invoice will be sent to you. To order a report please contact the TRICS® team HERE

There are currently a total of 24 research reports available to view

TRICS® Report 2014/1
Pass-By Report

However, over the last few years many have questioned whether a standard reduction in trip rate to account for pass-by and diverted trips is still accurate in a rapidly changing retail environment. Intended to supersede the 95/2 TRICS Research Report on pass-by and diverted trips, this report considers this question and reviews research on pass-by and diverted trips that has been carried out since 1995. It discusses whether current policy makes clear statements that would guide and support the assessment and analysis of these types of trips. Research that investigates the prevalence of such secondary trips in retail developments has been investigated. A thorough investigation of the TRICS dataset (v.7.1.1) has been undertaken to find statistically significant trends relating to trip generation. This report finds many of the key conclusions made within the 95/2 report to be no longer valid as shopping trends and travel behaviours have changed, with many of the key arguments and conclusions not made within the 95/2 report.

PRICE: FREE to TRICS® members
£50 to non-TRICS® members

TRICS® Report 2009/1
An econometric study of the relationship between land use and vehicle trip generations

This report has emerged from the sponsorship of a PhD course of study by the TRICS® Consortium in collaboration with the Economic and Social Research Council. The work sought to answer a number of questions and particularly, establish a scientifically grounded response to two key issues (i) can the data held in TRICS® be used for 'sound' econometric modeling and (ii) using appropriate econometric methods, is land zone placement (as defined in accordance with Planning Policy Guidance definitions) a genuinely important determinant of trip generation behaviour. The three land use categories studied in this project were office developments, food superstores and residential developments.

PRICE: £50 to TRICS® members
£100 to non-TRICS® members

TRICS® Report 2005/1
Trip Attraction Rates of Developments with Multiple Retail and Leisure Uses

This research study is focused on multi-use sites which do not necessarily meet the definition of "mixed use". The term "mixed use" is currently a loosely defined policy objective and is thus difficult to evaluate using existing quantitative data. The research into multi-use will help inform the debate regarding the benefits of so-called mixed use development. It will also highlight important factors that development control practitioners will need to consider when evaluating development proposals. The research is based on extensive analysis using data from the TRICS® database.

PRICE: £50 to TRICS® members
£200 to non-TRICS® members

TRICS® Report 2004/2
Hospital Travel

This research includes the collection of background information, including specifically commissioned multi-modal TRICS® surveys, to understand how the health sector and establishments within it operate and are influenced. TRICS® information is used to consider trip making and modal share. The influence and effect of Travel Plans is also considered.

PRICE: £60 to TRICS® members
£80 to non-TRICS® members

TRICS® Report 2004/1
Does Historic Site and Survey Data Remain Valid to Use?

In this report a concept of Back Validation has been adopted to investigate a process that can look back in time and verify the continued applicability, or not, of historic database sites. The objective of this research is to provide supplementary input and guidance as part of the "toolkit" for the user of the system. It aims to provide a positive steer to users when they consider how appropriate it is to use historic data.

PRICE: £60 to TRICS® members
£80 to non-TRICS® members

TRICS® Report 2003/1
The Effectiveness of Travel Plans

This report is a review of the effectiveness of Travel Plans and their characteristics, an identification of the information needed to quantify the effect that Travel Plans will have on mode of travel, and researches current TRICS® data and the future role that TRICS® can have in incorporating Travel Plan effects. The approach adopted for this study has been to review existing research, and based on this review, to make recommendations for a possible way forward for incorporating the effect of Travel Plans into TRICS®. This research differs from other Travel Plan research projects in that it has sought to identify a common assessment method for understanding Travel Plan effectiveness.

PRICE: £60 to TRICS® members
£80 to non-TRICS® members

TRICS® Report 2002/2
Seasonality Research

The objective of this report is to assist TRICS® practitioners in identifying typical profiles of vehicle trip making throughout the course of a year for different types of land use. The research illustrates how traffic activity varies for different land uses by time of day, day of week, and month of year. During 2000, a total of 16 sites were identified for possible consideration, for which subsequently a full analysis was undertaken in 2001 for 8 sites. The eight sites cover five of the 16 main land use categories used as parameters within the TRICS® database. These are Retail (3 sites), Employment (1 site), Health (1 site), Residential (2 sites), and Golf (1) site.

PRICE: £60 to TRICS® members
£80 to non-TRICS® members

TRICS® Report 2002/1
Relationships Between Accessibility and Parking for New Developments

This report examines the variation in levels of parking provision within new developments, for example by public transport accessibility or location, and relevance to travel characteristics by mode. The broad objectives of the research was to explore the relationship between parking provision, accessibility and mode choice for new developments; examine how the level of parking influences and relates to the mode choice; provide advice on parking standards for new developments; and determine appropriate definitions of modal accessibility, appropriate for use in TRICS®.

PRICE: £60 to TRICS® members
£80 to non-TRICS® members

TRICS® Report 1999/2
Research into Trip Rate Variation

This report explores the circumstances in which trip rates vary, using various data sources (including retail sales information as well as the TRICS® database), and develops guidance on good practice in trip rate selection and use. The report also contains an examination of the relationship between parking supply and peak parking demand, which has important implications for the use of trip rates in estimating parking provision.

PRICE: £60 to TRICS® members
£80 to non-TRICS® members

TRICS® Report 1999/1
Transport Characteristics of Foodstores at Retail Parks

This report contains analysis of travel surveys undertaken at two foodstores in Staffordshire and provides information on travel by different modes, customer characteristics, use of the car parks, trip lengths and the level of primary trips. The results of the surveys are also compared with those from the earlier TRICS® Safeway research (reports 95/3 and 95/4).

PRICE: £25 to TRICS® members
£40 to non-TRICS® members

TRICS® Report 1997/1
Transport Characteristics of Non-Food Retail Parks

This report analyses the results of questionnaire-based surveys and pedestrian/vehicle counts undertaken at four non-food retail parks in Dorset, Kent, Lancashire and Surrey. Each of the parks was surveyed on a Friday, Saturday and Sunday in 1996 and the results provide a valuable insight into the transport and shopping characteristics of this land use.

PRICE: £50 to TRICS® members
£80 to non-TRICS® members

TRICS® Report 1995/4
Traffic & Parking at Food Retailing (Appendices)
JMP Consultants Limited and Safeway

This report contains detailed calculated results to support the summary tables presented in 95/3.

PRICE: £100 to TRICS® members
£100 to non-TRICS® members

TRICS® Report 1995/3
Traffic & Parking at Food Retailing
JMP Consultants Limited and Safeway

This report summarises the results of surveys undertaken at 9 food superstores in November 1994. 1,000 interviews were undertaken with customers at each store and this was supplemented by traffic counts. The report illustrates the effect of store location on modal choice, parking requirements, travel length and relationships with adjacent land uses.

PRICE: £40 to TRICS® members
£40 to non-TRICS® members

TRICS® Report 1995/2
Pass By & Diverted Traffic - A Resume
JMP Consultants Limited

This report draws together the work that has been undertaken over the last 10 years on defining and quantifying "diverted and pass by traffic". An extensive bibliography is included.

PRICE: £25 to TRICS® members
£25 to non-TRICS® members

TRICS® Report 1995/1
Parking & Public Transport - The Effect on Mode Choice (2)
Additional surveys at B1 developments with constrained parking - JMP Consultants Limited

This report provides an addendum to 93/1 by looking at an additional 14 office sites located on the fringe of London and in other areas where on-site parking was heavily constrained. The results confirm the conclusions from the previous report which outlines the importance of the management of on-site parking space.

PRICE: £25 to TRICS® members
£25 to non-TRICS® members

TRICS® Report 1994/1
Long Term Changes in Superstore Traffic Generation
JMP Consultants Limited

This report analyses the basic assumption in the preparation of Traffic Impact Assessments that the aggregate level of traffic generated by a new retail development will be finite and static from the first year of opening until the store eventually closes or changes its trading position in some way. Average trip rate changes are calculated for all available data on the TRICS® database. This is backed by significant testing. The additional customer flows are analysed, so illustrating the effects of local competitive changes.

PRICE: £50 to TRICS® members
£80 to non-TRICS® members

TRICS® Report 1993/1
Parking & Public Transport - The Effect on Mode Choice (1)
A study of B1 developments - JMP Consultants Limited and SERPLAN

The report analyses the result of surveys at 60 offices located throughout the Southeast Planners Region to determine the relationship between parking, public transport and modal choice. The study concentrated on the journey to work trip.

PRICE: £50 to TRICS® members
£50 to non-TRICS® members

TRICS® Report 1992/2
Traffic Implications of Sunday Trading
JMP Consultants Limited

The report concludes on the effect of the seven day trading patterns of seven food superstore sites throughout the Christmas period. The results are compared with data held for stores trading pre 1991. The sites included are Asda, Burgh Heath; Asda, Fareham; Sainsburys, Burpham; Sainsburys, Chichester; Sainsburys, Poole; Tesco, Bognor Regis; and Tesco, Hookwood.

PRICE: £50 to TRICS® members
£80 to non-TRICS® members

TRICS® Report 1992/1
Assessment of Parking Demand
JMP Consultants Limited

This report compares parking demand ratios for land uses on the TRICS® system. The land uses include food superstores, DIY superstores, retail parks, offices, business parks and general industrial. The report studies in detail traffic flow data from a total of 223 sites. The results produce a statistical analysis of each land use classification and give a maximum parking demand ratio for each individual site.

PRICE: £60 to TRICS® members
£100 to non-TRICS® members

TRICS® Report 1989/5
Traffic Generated from Marinas
Hampshire County Council

The report sets out the traffic generation from three marinas (Agememnon Boat Yard, Bucklers Hard; Lymington Yacht Haven; Mercury Yacht Harbour, Hamble). Automatic traffic counters were established for 4 weeks throughout August 1988. Also, detailed parking accumulations were surveyed on one Saturday. The report contains details of the three sites and details of weather and tides (60 pp).

PRICE: £60 to TRICS® members
£100 to non-TRICS® members

TRICS® Report 1989/4
Traffic Generation from Industrial Estates
JMP Consultants Limited

Based on surveys undertaken in 1984 at 60n industrial sites in England (21), Scotland (14), Wales (13) and Northern Ireland (12). The report establishes regression relationships for trip generation. Trips are subdivided by purpose (i.e. commuting, business and deliveries). The work was undertaken for the Scottish Development Agency, the Welsh Development Agency, the Northern Ireland Development Agency and English Industrial Estates. The report comes in two parts, firstly the analysis of data and secondly the establishment of a formal estimate procedure (130 pp).

PRICE: £60 to TRICS® members
£60 to non-TRICS® members

TRICS® Report 1989/3
Review of Parking Standards
Surrey County Council

The report reviews the parking standards for most land uses. Data from other authorities was compiled as a comparison. Maximum parking accumulation for different land uses was extracted from the TRICS® database and some 60 "spot" surveys were undertaken to determine maximum parking usage. Detailed discussions with other highway authorities to review the problems of parking standards are reported. The report contains recommendations for revised standards (180 pp).

PRICE: £50 to TRICS® members
£50 to non-TRICS® members

TRICS® Report 1989/2
Traffic Generation Studies
Surrey County Council

A detailed assessment of traffic generation from 2 superstores, 2 DIY stores, 2 business parks and 2 offices. Data was collected by counts and interviews. Additional data exists in the report on modal split to offices and catchment areas for each development. The report contains full details of traffic counts and parking accumulations at each site in half hour periods (180 pp).

PRICE: £60 to TRICS® members
£100 to non-TRICS® members

TRICS® Report 1989/1
Traffic Generation Study of Offices & High Tech Sites
London Borough of Hillingdon

The report contains detailed traffic count data for 12 offices and "High Tech" sites surveyed in 1988. The data was collected by a variety of survey techniques including roadside interviews, foyer interviews and employee interviews. The report contains traffic flows in and out of each site with associated parking accumulation. Additional data exists for some sites on modal choice. Trip length distributions (employment catchment) are available for all sites. The report covers 4 offices in Central Uxbridge, 2 "rural" office complexes, 2 offices in local centres, 2 industrial estates (traditional) and 2 high tech sites. One of the high tech sites was Stockley Park with 100%,000 sq. ft. of development (150 pp).

PRICE: £60 to TRICS® members
£100 to non-TRICS® members