Traffic signs make up roughly one-third of the Tennessee permit test, and they're often where applicants lose the most points. This page focuses entirely on Tennessee traffic signs — regulatory, warning, guide, construction, and recreational — so you can master sign identification before test day. The Tennessee Department of Safety expects you to recognize signs by **shape and color alone**, not just the words on them. That's because real-world driving doesn't always give you time to read a sign. An octagon always means stop. A diamond always means warning. A pennant means no passing zone. On