Dave Harford on Twitter: "Heading away on a road trip the weekend? Incident or emergency on a motorway? Unsure of your location? Marker posts & emergency telephones pin point your location quickly
Marker Post - Type 1
Driver location signs – Metrication UK
Metric signs on UK roads – UK Metric Association
Edge marker posts | Waka Kotahi NZ Transport Agency
Driver Location Signs - Roader's Digest: The SABRE Wiki
Distance information – UK Metric Association
Electric vehicle charge points at supermarkets double in two years | RAC Drive
Driver Location Signs - Roader's Digest: The SABRE Wiki