[Matra et Alpine]

Another common challenge in navigations is to describe a route by the road height markings.

For these a Spot Height (SH) will be give as a single number and the nav has to find it on the map and determine the shortest route to get to it.

Example below has a red circle around SH93, the dot on the road is where the actual road height is. Note that this is at a junction. This gives 3 directions you could approach this SH from and 3 you could leave on. This would be a typical 'challenge' an event may set How you approach and leave wil be determined by other information for the stage.

If you undertake 'plot'n'bash' it is advisable to highlight ALL spot heights in the map area the event is being run on AS SOON AS you know the map and area for the event - these are normally given at least a week before the event. Then when you are trying to find these heights in a moving car you stand a chance !!