What does the white bicycle pattern on a blue background mean in traffic signs?

The white bicycle pattern on a blue background indicates that non-motorized vehicles are allowed to pass.

Note that the blue and white bicycle patterns also vary in shape. Circular signs are placed at the starting point of the road for non-motorized vehicles and at appropriate locations in front of the entrances of each intersection, indicating that the road is only for non-motorized vehicles; square signs are placed at the starting point of the lane and at appropriate locations in front of the entrances of each intersection, indicating that the road is for non-motorized vehicles only. The lane is for non-motorized vehicles only.

Traffic signs can be mainly divided into seven types: warning signs, prohibition signs, instruction signs, guide signs, tourist area signs, work area signs, and notice signs. The background colors of traffic signs mainly include yellow, blue, green, and brown:

Yellow represents warning and is used as the background color of warning signs;

Blue represents instructions, follow , used as the background color of indicator signs, and also represents driving information such as place names, routes, directions, etc., and is used as the background color of general road guide signs;

Green represents driving information such as place names, routes, directions, etc. , used as the background color of highway and urban expressway signage;

Brown: indicates the indication of tourist areas and scenic spots, and is used as the background color of tourist area signs.

White: used for the background color of the logo, text and graphic symbols, and the border of some logos.