Guidance

Speed limit appraisal tool

This tool will help councils to assess the full costs and benefits of any proposed local speed limit schemes.

Document

Detail

The Department for Transport’s speed limit appraisal tool will help councils to assess the full costs and benefits of any proposed local speed limit schemes. As well as casualties and other traffic effects, we have made particular efforts to build into the tool effects that cannot be monetised, such as those that enhance quality of life.

To install the tool, run the installation file ‘SLAT_Installation_V1.0.3.exe’ and follow the presented dialogues:

You may need administrator rights, depending on your local IT rules and regulations. If you experience problems when trying to install the tool, you should refer in the first instance to your IT support. Full details are in our ‘Speed limit appraisal tool user guidance’.

Users may find it helpful to have an example set of data:

This example data includes populated output files and input data as Excel spreadsheets. Unzip the example data file into the tool’s studies area (standard location: C:\Speed_Limit_Appraisal_Studies).