The M4 Guide Line is a broken road marking used to show you the correct path through complicated intersections, merges, or diverges. These lines are designed to clarify the intended vehicle path, reducing driver uncertainty and potential conflicts. While they provide helpful guidance, remember that Guide Lines do not grant priority; you must still adhere to traffic signals and other priority rules. Always follow the indicated path to ensure predictable driving and smooth traffic flow, adapting your speed as needed.
Learn the key details of the M4 - Guide Line road sign, including its function, what it communicates to drivers, and how it applies in real traffic situations in Sweden. Use this overview to understand the sign clearly and recognise it confidently during the Swedish driving theory exam.
Guide lines are used to lead traffic through complicated intersections, merges, diverges, or unusual layouts. They clarify the intended vehicle path to reduce uncertainty and conflicts. The pattern typically uses equal dash and gap lengths, making it visually distinct from some other broken lines. Following these lines supports predictable driving and smoother traffic flow.
A broken guidance line showing a suitable path through complex junctions or areas where extra guidance is needed.
Get clear, practical answers to the most common questions about the M4 - Guide Line road sign. Learn how the sign works, what rules it represents, and how it affects real driving situations. This FAQ strengthens your understanding and supports accurate decision making for the Swedish driving theory exam in Sweden.
The M4 Guide Line is a road marking designed to lead drivers through complex junctions or areas where extra guidance is needed. Its purpose is to clarify the intended vehicle path, helping to reduce uncertainty and ensure smoother traffic flow.
No, the M4 Guide Line does not grant you priority. It only indicates a suitable path. You must still obey all traffic signals, signs, and priority rules, yielding to other traffic when required.
You should avoid cutting across the guided path at the last second, ignoring the guidance to force your way into another lane or stream of traffic, or assuming you have priority simply because you are following the line. These actions can lead to dangerous situations.
You should follow the indicated path through the junction or complex area. If you need to change lanes or positions, do so early and signal clearly. Adapt your speed to merge safely while staying on the route shown by the guide line.
A common exam trap is assuming the guide line gives priority. Learners might mistakenly think they can proceed without yielding if they are on the guide line. Always remember to check for other traffic and obey all priority rules, regardless of the guide line.
You would typically see the M4 Guide Line in situations requiring extra directional clarity, such as complex multi-lane intersections, slip roads merging onto a highway, or unusual road layouts where the intended path needs to be explicitly shown to prevent confusion or accidents.
A clear reference image of the M4 - Guide Line road sign used in Sweden.

The M4 - Guide Line road sign may also be known by these alternative names or terms.
The M4 - Guide Line road sign is part of the Road Markings (M) category, which groups together signs with similar rules and functions.