Markings on highways have important functions in providing guidance and information for the road use. Major marking types include:
- pavement and curb markings
- object markers
- colored pavements
- channelizing devices
In some cases, markings are used to supplement other traffic control devices such as signs, signals and other marking, while other times markings are used alone to effectively convey regulations, guidance or warnings in ways not obtainable to the use of other devices.
Pavement markings can enhance roadway delineation with the addition of audible and tactile features such as bars, differential surface profiles, raised pavement markers or other devices intended to alert the road user that a delineation on the roadway is being traversed.