highway location marker

Highway location markers often have the route identifier marked on them.

A highway location marker is the modern-day equivalent of a milestone.

Location identification is achieved by the highway location markers having numbers on them - usually the distance from some reference point.

In some European countries, highway location markers (distance posts similar to milestones) are placed at regular intervals along roadsides.

Driver location signs are English highway location markers, first introduced in 2003, that complement distance marker posts.

Some jurisdictions place highway shields on highway location markers (kilometre or mile markers).

California uses a postmile highway location marker system on all of its state highways, including U.S. Routes and Interstate Highways.

The historical term milestone is still used today, even though the "stones" are typically metal highway location markers and in most countries are based on metric rather than imperial units of measure.

However, the use of highway location markers to pinpoint accidents made it necessary to identify the correct carriageway in an unambiguous manner so that the emergency services could get to the scene of the accident with minimal delay.

A reassurance marker or confirming marker is a type of traffic sign, designed to confirm to travelers the identity of the route they are traveling, which doesn't necessarily provide other information, such as distances traveled (as is done by highway location markers), distances to other locations, or upcoming intersections.