![Dave Harford on Twitter: "Are you heading on a motorway today? You've stumbled on a incident that requires a 999 response - you called 999 but unsure of location - look for Dave Harford on Twitter: "Are you heading on a motorway today? You've stumbled on a incident that requires a 999 response - you called 999 but unsure of location - look for](https://pbs.twimg.com/media/DuHwbnNWsAIvBWM.jpg)
Dave Harford on Twitter: "Are you heading on a motorway today? You've stumbled on a incident that requires a 999 response - you called 999 but unsure of location - look for
The M25 Motorway (Marker Posts 143.7 - 151.8) (Temporary Restriction and Prohibition of Traffic) (No. 2) Order 2006 No. 2006/131
![CMPG on Twitter: "Do you know what motorway marker posts mean? You do now! http://t.co/Zxd90KYA4q" / Twitter CMPG on Twitter: "Do you know what motorway marker posts mean? You do now! http://t.co/Zxd90KYA4q" / Twitter](https://pbs.twimg.com/media/CIl4vHVWwAEZmgy.jpg)
CMPG on Twitter: "Do you know what motorway marker posts mean? You do now! http://t.co/Zxd90KYA4q" / Twitter
![Positions of driver location signs on motorways - a Freedom of Information request to National Highways Limited - WhatDoTheyKnow Positions of driver location signs on motorways - a Freedom of Information request to National Highways Limited - WhatDoTheyKnow](https://www.whatdotheyknow.com/request/272238/response/676245/attach/2/Driver%20location%20signs.png?cookie_passthrough=1)