The document discusses 6 important traffic signs: 1. Two way road signs indicate traffic can flow in both directions with a line down the middle. 2. One way road (no right entry) signs mean vehicles can exit but not re-enter from that road. 3. One way road (no left entry) signs mean vehicles can enter but not exit onto that road. 4. No entry signs prohibit any vehicles from entering the area past the sign. 5. No pedestrian signs warn that pedestrians are not allowed in heavy traffic areas for safety. 6. Men at work signs alert drivers to slow down and be cautious as road workers may be present.