As highway layouts change, pavement markings are repeatedly renewed, or surface dressing is applied over old markings. This can lead to an accumulation of pavement markings and surface treatments which can destabilize motorcyclists particularly if this results in standing water. Similarly, masking of redundant markings can also result in areas of surfacing with different skidding resistance.

Treatment

: When placing new pavement markings, it is best practice to remove the existing pavement markings entirely to eliminate the risk of a build-up of material. When grinding is used to remove existing markings, the grinding should be specified in such a way that the ground pavement surface does not appear to still be pavement markings in wet or dark conditions.