The Limited Vehicle Height sign (314) is a restrictive traffic sign that informs drivers about a maximum height limit for vehicles on a particular section of road or in a specific area. This sign, often seen before bridges, tunnels, or low underpasses, requires immediate compliance. You must ensure your vehicle's height, including any loads, does not exceed the limit shown. Always check for supplementary plates that might specify exceptions or the exact extent of the restriction, and be prepared to take an alternative route if your vehicle is too tall.
This sign is critical for managing traffic flow and safety in Iceland, especially in areas with low bridges or structures. Proper interpretation of this traffic sign is essential for your driving theory revision and avoiding potential hazards during your Icelandic licence process.
Limited Vehicle Height is a restrictive sign that removes a movement, access right, or operating condition that would otherwise be possible. It is used to manage safety, protect vulnerable users, reduce conflict, or keep unsuitable vehicles and behaviour out of a particular road environment. The restriction usually starts at the sign itself and continues until it is cancelled, replaced, or naturally ends according to the road-sign rules. Whenever a supplementary plate is present, it tells you exactly which vehicles, times, distances, or conditions the ban covers.
This sign prohibits or restricts limited vehicle height from the point where it applies. Drivers must obey the restriction immediately and look for any supplementary plate or end sign that explains the scope, duration, or exceptions.
Get clear, practical answers to the most common questions about the 314 - Limited Vehicle Height 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 Icelandic driving theory exam in Iceland.
The primary purpose of the Limited Vehicle Height sign (314) is to prevent vehicles that are too tall from proceeding into an area where they might cause damage or pose a safety risk. This is crucial for maintaining safe passage under bridges, through tunnels, or in areas with overhead obstructions. Drivers must adhere to this restriction immediately upon seeing the sign.
If your vehicle, including its load, exceeds the height specified on the sign or any supplementary plate, you must not proceed past the sign. Instead, you should safely find an alternative route that accommodates your vehicle's height. It's essential to plan your route in advance, especially when driving a taller vehicle.
Yes, sometimes supplementary plates beneath the main sign can indicate exceptions. These might specify certain types of vehicles that are allowed or particular times when the restriction applies. Always carefully check for any supplementary plates, as they provide crucial details about the scope and conditions of the height limit.
For the Icelandic theory test, understanding the Limited Vehicle Height sign (314) is vital. You'll be tested on your ability to recognise the sign, understand its implications for vehicle dimensions, and know the correct course of action – which is to comply with the restriction or find an alternative route. Failing to adhere to height restrictions can lead to serious accidents and is a common point of failure in exam scenarios related to road safety and understanding traffic signs.
If there is no supplementary plate on the Limited Vehicle Height sign (314), the restriction typically applies from the point of the sign onwards. It will remain in effect until it is officially cancelled by another sign, replaced, or naturally ends at the next relevant junction. You must assume the height limit is in effect for the entire duration until you see a sign indicating otherwise.
A clear reference image of the 314 - Limited Vehicle Height road sign used in Iceland.

The 314 - Limited Vehicle Height road sign may also be known by these alternative names or terms.
The 314 - Limited Vehicle Height road sign is part of the Prohibition and Restriction Signs category, which groups together signs with similar rules and functions.
Comparing signs like 'Limited Vehicle Height' with others in prohibition groups aids recognition and reduces confusion. Sharpen your theory test revision by mastering these similar road signs through focused traffic sign comparison.

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After reviewing the full list of Icelandic road signs, reinforce your learning with targeted practice. Explore our sign group categories or take a specific quiz to test your recognition and recall. Ensure you're fully prepared to identify and interpret all traffic signs for your upcoming driving theory exam.
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