I recently found a neat template at one of the big craft stores. It is actually an eraser guide, but I found it works great for putting lines on roadways with a colored marker.

It has several different patterns on it, and I am sure it will work for other markings as well.

The best part is that it is very inexpensive (around $2), and made from thin metal that can be easily cleaned with any solvent.

Tip submitted by:
Manny Kaneblei
York, Pa.