What traffic signs do you want?
I have a federal manual that includes dimensions and other
specifications of many traffic signs. From that, I have drawn what signs
alvarez at alumni dot caltech dot edu
Unless they are specific condition traffic signs, a lot of clip art programs
have traffic signs, both US and International. In addition some state
highway agencies have their sign design manual on their web page.
here is a link that with take you to the ohio dot sign manual
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