DGT Permiso B — Exam Topic

Signals & Traffic Lights

Traffic signs, light signals, agent whistle codes, road markings, and the hierarchy of signals.

25
Practice Questions
7
Key Points
4
Exam Focus Areas

Overview

Traffic signals, road markings, and agent signals form the communication system of the road. The DGT exam tests the meaning of signs and the hierarchy when signs conflict with each other.

Key Points to Know

Hierarchy: agent signals > traffic lights > road signs > road markings
Traffic light sequences and the amber light rule
Types of road signs: warning, regulatory, informational
Road markings: continuous line, broken line, yellow lines
Police officer hand and whistle signals
Level crossing signals and barriers
Variable message signs and their legal status

What the Exam Tests

What to do when a traffic light and road sign conflict
The meaning of a flashing amber light
When you may cross a continuous white line
Correct response to different police whistle codes

Other Exam Topics