How wide should stop/slow paddles be, and what size letters are used on them?

The correct dimensions for stop/slow paddles used in work zones are 18 inches wide with 6-inch letters. This specification ensures that the paddles are both large enough to be seen from a distance and easy to read for the drivers who must react promptly to the instructions given. The size of the paddle and the letters is crucial for visibility and legibility, particularly in dynamic environments like construction areas where quick decisions are necessary.

The 18-inch width allows the paddle to be easily spotted by oncoming vehicles, while the 6-inch letters provide clear and distinguishable messaging, enhancing the overall safety of the work zone. This size standard is recognized and established in traffic control device guidelines to maintain uniformity and effectiveness in conveying messages to drivers.