Road signs fall into several sub-categories that include:
- Regulatory Signs to advise drivers of restrictions such as speed limit signs, stop signs, and parking restriction signs
- Permanent Warning Signs (yellow) to indicate the presence of road hazards such as curve warning signs, speed hump signs, and “slippery when wet” signs
- Temporary Warning Signs (orange) to indicate hazards of a temporary nature such as road works signs, loose metal signs, and lane closure signs Street name signs (blue) are provided to indicate the names of streets. Their best use is in providing assistance to road users who are unfamiliar with the area and are trying to confirm road names when following a map or route instructions. The numbers on the signs are RAPID numbers to indicate the addresses of private properties.
- Guide Signs (green) provide directional information as well as information such as distance.
- Amenity signs (Tourist brown; motorist services blue) supplement street name signs to assist in locating a particular facility. The use of amenity signs is carefully managed to provide additional assistance to road users where warranted, while avoiding the proliferation of large numbers of signs.