The M23 sign is a crucial marking used alongside 'No Stopping' (M21) or 'No Parking' (M22) signs to strongly emphasize that stopping or parking is prohibited in that specific area. Its purpose is to reinforce existing regulations, especially where violations are common or safety is critical. Drivers should always treat this marking as a clear and firm indication of a restriction that must be adhered to, ensuring traffic flow and safety.
Learn the key details of the M23 - Combined Reinforcement for No Stopping/Parking or No Parking 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.
This marking is used to reinforce curbside restrictions shown by the no stopping and parking marking (M21) and the no parking marking (M22). It emphasizes that the restriction applies clearly along the section and should not be ignored. It is especially helpful where frequent violations occur or where the restriction is safety critical. Drivers should interpret it as an added clarity measure, not as a different type of rule.
A reinforcing marking used together with no stopping and parking or no parking markings to strengthen the restriction.
Get clear, practical answers to the most common questions about the M23 - Combined Reinforcement for No Stopping/Parking or No Parking 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 M23 sign is a reinforcing marking. It's used with either the M21 (No Stopping) or M22 (No Parking) sign to make the restriction absolutely clear. It signifies that stopping or parking is forbidden in that exact location.
When you see the M23 sign, any action that violates the reinforced 'no stopping' or 'no parking' rule is prohibited. This includes stopping, parking, or even briefly waiting in a way that obstructs traffic or visibility, in the area marked by M21 or M22.
You must treat the restriction as being strictly enforced. If the sign is reinforcing 'no stopping', do not stop at all unless absolutely necessary for traffic reasons. If it's reinforcing 'no parking', do not park your vehicle there. Find a permitted area to stop or park elsewhere.
A common trap is assuming that the reinforcing mark M23 means the rule is optional or less strict. Learners might also get confused if they only see the M23 without recalling the M21 or M22 it's paired with. Always remember M23 is a confirmation of an existing prohibition, not a new rule.
The M23 is typically used in areas where drivers frequently ignore 'no stopping' or 'no parking' rules, or where such stopping would be particularly dangerous. It serves as an extra visual cue to prevent violations and ensure safety, for example, near junctions, pedestrian crossings, or on narrow roads.
A clear reference image of the M23 - Combined Reinforcement for No Stopping/Parking or No Parking road sign used in Sweden.

The M23 - Combined Reinforcement for No Stopping/Parking or No Parking road sign may also be known by these alternative names or terms.
The M23 - Combined Reinforcement for No Stopping/Parking or No Parking road sign is part of the Road Markings (M) category, which groups together signs with similar rules and functions.