Marker post and driver location sign locations
Case reference FOI2026/01572
Received 23 September 2026
Published 11 November 2026
Last amended 11 November 2026
Request
Please could you provide the current locations of all marker posts and driver location signs on the Strategic Road Network, including slip roads, as a single CSV file. For each post I would like:
• the post reference (e.g. P132/5A)
• the road number
• the carriageway letter
• the easting and northing, or latitude and longitude
• a yes/no column showing whether a driver location sign is installed at that post
Response
Please see the two attached documents for the information National Highways holds. These are two different data sets however we have added to the Marker Post data whether a driver location sign is installed at the post from the records we hold.
The data is based upon the National Highways Marker Post data and the Driver Location sign data held in Confirm, spatially matching the two on a 20m radius.
Documents
This is National Highways' response to a freedom of information (FOI) or environmental information regulations (EIR) request.
You can browse our other responses or make a new FOI request.