What's the difference between a municipal street sign and an expressway street sign?

The differences between municipal road signs and highway road signs are as follows:

Except landmarks, 100-meter piles, and jiepai, the general roads are blue and white. Except for the location identification signs, the shapes are all rectangular and square.

Milestones, 100-meter piles and road boundary piles are all guiding signs. When the milestone is located on the national highway, the colors are white and red; When set on the dart, the color is white and blue; When it is located on the county highway, the color is white and black. Regardless of the nature of the road, the color of highway boundary markers is white and black.