North West Motorway Police on X: "Marker posts are blue & white metal shields on motorway side. Eg Marker post 280.4A is 280.4km north of start of M6.. http://t.co/bJJes1UaAi" / X
The Evolution of Motorway Signs – Part One – Show me a sign
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Bryan Phillips School of Motoring - Do you know what motorway marker posts mean? | Facebook
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Verge Marker Posts | Highway Supplies
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Miscellaneous advisory and warning signs | Transport Scotland
Road signs countdown hi-res stock photography and images - Alamy
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Looking out for number one | Roads.org.uk
Count Down Marker 300 yds Post Mounted Sign - Diagram 823 R2/RA2 (Face Only)
Different Types of Motorway Signs | Resources | PassMeFast
Driver location sign - Wikipedia
Motorway marker post showing direction to nearest emergency phone Stock Photo - Alamy
Durham Roads & Armed Policing on X: "Motorway marker posts pin point your exact position for the 999 services. The arrow points to the nearest SOS box http://t.co/b1t40zLp" / X
Theory test practice: what are these road signs? | Veygo