Geopositioning markers

thumb|Roman cardo in Jerash, JordanA cardo (: cardines) was a north–south street in ancient Roman cities and military camps as an integral component of city planning. The cardo maximus, or most often the cardo, was the main or central north–south-oriented street.

thumb|A walking route with a number of waypoints marked A waypoint is a point or place on a route or line of travel, a stopping point, an intermediate point, or point at which course is changed, the first use of the term tracing to 1880. In modern terms, it most often refers to coordinates which specify one's position on the globe at the end of each "leg" (stage) of a journey.

markings that indicate the route of a footpath

number assigned to a road junction, usually an exit from a freeway