Longer semi-trailers trial: data guidance and documentation
Details of the data which operators in DfT's longer semi-trailers trial are required to submit.
This file may not be suitable for users of assistive technology. Request an accessible format.
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email email@example.com. Please tell us what format you need. It will help us if you say what assistive technology you use.
The Department for Transport’s trial of longer semi-trailers for longer articulated goods vehicles is a research project. It has been established to evaluate and understand the use of these vehicles. The usage and performance of all of the longer semi-trailers in the trial is being monitored and evaluated by DfT’s contractors, Risk Solutions.
Operators taking part in the trial must collect data on their use of the trailers and submit it regularly to Risk Solutions.
For full guidance on what data is required and the submission process, please read our ‘Trial evaluation data guide’. Trial participants will need to use the following spreadsheets to submit their data:
- the ‘journey log tool’ spreadsheet should be used as a daily or weekly journey log for capturing data on individual trailer trips
- the ‘data submission file’ should be used to record the data from all logs, plus incident and trailer data - send it to Risk Solutions at the end of each data collection period
- the ‘company information file’ should be used to to submit information about existing operations - this is only required the first time data is submitted to the trial
- the ‘qualitative survey file’ should be used to let us know about other aspects of using longer semi-trailers each period
Contacting the department
The department appointed Risk Solutions in 2011, experts in strategic risk management, to independently monitor the trial. Risk Solutions are monitoring, among other things, the impact of the longer semi-trailers on carbon emissions, lorry miles and accident rates. They are producing regular reports.
Risk Solutions will be able to answer enquiries from trial participants related to the data collection aspects of the trial.
Any enquiries not related to the data collection or analysis should be addressed to the Department for Transport. This includes queries about the allocation process and enquiries from operators wanting to participate in the trial.