Our Chinese nation occupies 9.6 million square kilometers of land in Asia, nurturing a population of 1.4 billion. This results in a very high population density per square kilometer, and in some areas, it's not permitted to make U-turns. Today, I'll discuss the LED active light signboards that are allowed for U-turns.
In areas or intersections where a turning lane or a designated turning point is in place due to traffic organization or management needs, a sign allowing U-turns should be posted.
2. The sign allowing U-turns should be positioned at an appropriate spot before the section of road where motor vehicles are permitted to make U-turns or at the end of an intersection where U-turns are allowed.
3. The allowed U-turn sign should face the direction of incoming traffic, be aligned with the ground markings, and its placement must not disrupt the normal operation of vehicles on other lanes.
When a left-turn arrow has specific time or vehicle type restrictions, or when indicating the distance to the next left turn, an auxiliary sign should be used.
Generally, the basic meanings of colors on LED active traffic sign boards are as follows:
Red: Indicates prohibition, stop, and danger, used for the border, background, and slashes of prohibition signs, as well as for cross symbols, slash symbols, and the background of warning linear guidance signs.
2. Yellow or Fluorescent Yellow: Indicates a warning, used as the background color for warning signs.
3. Blue: Indicates commands and adherence, used as the background color for directional signs; represents place names, routes, directions, etc., for general road guiding signs.
Green: Indicates place names, routes, directions, and other driving information, serving as the background color for highway and expressway directional signs.
5. Brown: Indicates directional signs for tourist areas and attraction projects, used as the background color for tourist area signs.
6. Black: Used for text, graphic symbols, and the borders of some logos.
7. White: for the background color of logos, text, graphic symbols, and the borders of some logos
8. Orange or Fluorescent Orange: Used for warning and directional signs in roadwork zones.
9. Fluorescent yellow-green: Indicates a warning, used for pedestrian caution and child caution signs.
The general rules for the shapes used in LED active traffic sign boards are as follows:
Equilateral Triangle: Used for warning signs.
2. Round: Used for prohibition and directive signs.
3. Inverted equilateral triangle: Used for the "yield" sign indicating a "减速让行" (decelerate and yield) traffic control.
Octagon: Used for "Stop and Yield" signage.
5. Fork Sign: Used for "Railroad Crossing Fork Sign" warning sign.
6. Square: Used for directional signs, some warning, prohibition, and指示 signs, tourist area signs, supplementary signs, and informational signs.
