What does the cross in the middle of the yellow triangle stand for?

Signs used to warn drivers of vehicles to drive slowly and pay attention to intersections where cars are coming laterally are set at appropriate positions on the driving sections of plane intersections with poor vision.

The warning sign is a black border with a yellow background. In Sweden, Serbia, Bosnia, Croatia, Finland, Iceland, Greece, Macedonia and Poland, warning signs are red frames with amber backgrounds.

This is because climate factors affect the choice of color. In these areas where it often snows, red and amber signs are more noticeable than red and white signs. The warning sign of the polar bear in Spitsbergen Islands was changed from a black bear with a white background to a white bear with a black background (both triangular signs with red borders). Some countries with white background signs will choose amber on the signs of road construction or other projects.

Extended data properties:

Most countries set up signs on roads to warn, prohibit, restrict and guide road users. International road traffic signs originated in Europe try to break down the barriers caused by different languages in different places. The revised Annex1968165438+1October 8th to the Convention on Road Traffic Signs divides road traffic signs into seven categories.

Danger warning signs (except those located at intersections or near grade crossing) are signs to control the priority right of way at intersections, danger warning signs on the approach roads at intersections and signs to control the priority right of way at narrow sections. Regarding grade crossing's priority right of way, signs other than temporary parking and parking signs, and signs attached to temporary parking and parking signs, countries have different ways to classify road traffic signs.

Origin:

There are various legends, such as the origin of ancient worship of men, the origin of the benchmark based on sacred stones, and the road signs that mark the realm of temples. However, a more appropriate statement should be a theory established to keep the village safe and gather wealth. Road signs now play a greater role and become the infrastructure project of social development and urbanization.

Baidu Encyclopedia-Warning Signal