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How to draw C on the S road of driving school
The standard of S Road is two three-eighths circles, with a trolley radius of 7.5m, a road width of 3.5m, a cart radius of12m and a road width of 4m!

It is difficult to draw a standard for this kind of drawing without computer drawing. I summarized the manual drawing:

1 Draw two groups of rectangular lines consisting of two squares first.

Cut a square diagonally in each group of rectangles to draw the first three-eighth circle, and the same is true for the other group, with the circles in opposite directions.

Then the two groups of cut rectangles are butted together and glued on a piece of paper, and a relatively standard S-road can be drawn.

The drawing scale can be 1: 100.