Expressway exit signs are set up. The purpose of expressway exit signs is to guide vehicles on expressways to safely and smoothly drive to other highways. A series of exit signs should be set up at the exit from far and near, including exits. Trailer signs and exit signs, etc. Exit warning signs are generally set at 2km, 1km, 500m before the exit and at the beginning of the deceleration lane of the exit ramp; exit signs are generally set at the end of the triangle belt of the exit ramp.
Main traffic signs and auxiliary signs
The main signs can be divided into four types:
(1) Indicating signs; usually round and rectangular, with a white pattern on a blue background. It is used to instruct vehicles and pedestrians to drive in prescribed directions and locations. Such as going straight, turning left, turning right, parking, detouring, etc.
(2) Warning signs: usually equilateral triangle (or rhombus), yellow (white) bottom black (red) side, black (or dark blue) pattern. It is used to warn drivers to pay attention to the dangers in the road section ahead and the measures that must be taken. Such as forecasting intersections, road turns, railway crossings, slippery sections, sections where rocks may fall, uneven roads, merged traffic, etc.
(3) Prohibition signs: usually round, with a red border on a white background, and a black pattern with red slashes. It is a sign that prohibits or appropriately restricts vehicles based on street, highway, and traffic conditions. Such as no traffic, no parking, speed limit, weight limit, width limit, etc.
(4) Directional signs: usually rectangular, with white characters on a blue (green) background and a white pattern. It is used to indicate the boundaries of cities, towns and villages, the direction and distance of destinations, the entrances and exits of expressways, service areas and famous places, etc., and various guidance along the way. Such as national highway numbers, milestones, hundred-meter stakes, boundary markers, road signs, place name plates, and signs for highway entrances and exits, gas stations, repair stations, parking lots, etc. Auxiliary signs are attached to the main signs for supplementary explanation. It can be divided into four types: vehicle type, time, interval range, and distance. Auxiliary signs cannot be set up separately.