The J37 'General Danger — Exit Construction' sign warns you that vehicles from a construction site may enter the road ahead. These vehicles can be slow-moving, have limited visibility, and may bring mud or debris onto the carriageway, reducing grip. Always be prepared for sudden appearances, temporary speed limits, or lane shifts, and pass this area with extreme caution.
Learn the key details of the J37 - General Danger — Exit Construction road sign, including its function, what it communicates to drivers, and how it applies in real traffic situations in the Netherlands. Use this overview to understand the sign clearly and recognise it confidently during the Dutch driving theory exam.
Here the general danger sign is combined with a supplementary plate referring to construction traffic entering or leaving the road. Heavy site vehicles may appear slowly from side access points and can carry mud or debris onto the surface. The sign is often used near building sites, roadworks, or temporary depots. Drivers must anticipate slow manoeuvres, unusual vehicle paths, and temporary markings or instructions from traffic controllers.
This sign warns of construction traffic entering or leaving the carriageway, often at a temporary access point. Slow, heavy vehicles, mud, and debris can appear unexpectedly, so you must reduce speed, increase your distance, and be ready for sudden movements or instructions from road workers and temporary traffic control. Extra care is needed because movements of construction vehicles can be slow, wide, or unpredictable compared with normal traffic.
Get clear, practical answers to the most common questions about the J37 - General Danger — Exit Construction 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 Dutch driving theory exam in the Netherlands.
The J37 sign is a warning sign indicating that construction vehicles might exit a work site and enter the road. It alerts drivers to potential hazards like low-speed vehicles, reduced visibility, and slippery road surfaces due to mud or debris.
The primary dangers include construction vehicles exiting unexpectedly, possibly at low speeds and with impaired visibility. You should also be aware of reduced road grip from mud and debris near the construction exit. Following temporary speed limits and lane changes is crucial.
When you see the J37 sign, you must reduce your speed significantly. Be ready to stop or take evasive action. Give construction vehicles a wide berth if they are entering or exiting the road, and always follow instructions from any site marshals present.
Yes, you are prohibited from passing construction vehicles too closely, as they may suddenly move or block your path. It's also essential not to ignore any temporary signs or instructions related to the construction site, such as reduced speed limits or diversions.
While many danger signs warn of general hazards, the J37 specifically highlights the risk of construction vehicles entering or exiting the carriageway. This means you need to anticipate large, potentially unpredictable movements from site equipment, not just regular traffic.
A clear reference image of the J37 - General Danger — Exit Construction road sign used in the Netherlands.

The J37 - General Danger — Exit Construction road sign may also be known by these alternative names or terms.
The J37 - General Danger — Exit Construction road sign is part of the Warning Signs (J) category, which groups together signs with similar rules and functions.