The 'Explosives Prohibition Supplementary Plate' (sign code 622.9) is a regulatory sign that imposes a specific restriction or prohibition. You must understand its exact meaning, which vehicles it applies to, and where the restriction starts before proceeding. This sign is part of a set of legal controls on the road, meaning its instructions are binding and must be obeyed.
This supplementary plate clarifies prohibitions for vehicles carrying explosives. Learn its specific meaning and how it affects your driving decisions during your theory test revision.
This regulatory sign is part of the legal control of the road. It may require a driver to stop, give way, keep to a direction, avoid a movement, stay out of a restricted area, or respect a vehicle-specific rule. In practice, the sign should be read with the stop line, lane markings, road layout, and any supplementary plates so the instruction is obeyed before the controlled point. It is listed in the catalogue as code 622.9.
"Explosives prohibition supplementary plate" gives a binding instruction, restriction, or prohibition. The driver must understand who it applies to, where it starts, and whether any exception is shown before continuing.
Get clear, practical answers to the most common questions about the 622.9 - Explosives prohibition supplementary plate 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 British driving theory exam in Great Britain.
This supplementary plate is always used with another sign to add a specific prohibition related to explosives. It dictates that vehicles carrying explosives, or certain types of explosives, must not proceed past the sign or into the controlled area. Always check the main sign it accompanies and any text on the plate itself for precise details.
You must carefully read the supplementary plate along with the main sign it is attached to. Look for specific vehicle types, classes, or descriptions of explosives mentioned. If your vehicle or its load is not explicitly mentioned as being exempt, you must assume the prohibition applies to you and find an alternative route.
The restriction typically starts from the point where the sign is displayed, or from a stop line or road marking indicated by the sign layout. The instruction applies before you enter the controlled area or make the controlled movement. Never assume you can proceed if your vehicle is covered by the prohibition.
Yes, exceptions may be shown on the supplementary plate itself. These could relate to specific times of day, certain types of vehicles, or specific purposes. If no exception is listed that clearly applies to your vehicle and journey, you must comply with the prohibition. Do not assume an exemption unless it is explicitly stated for you.
If the sign prevents your intended movement, you must not proceed into the prohibited area. Your responsibility is to choose another legal route that bypasses the restriction. This might mean taking a different road or waiting until a specified time if the prohibition is time-limited and an exception applies.
While this sign specifically prohibits certain vehicles carrying explosives from entering an area or using a road, there are separate regulations and signs concerning speed limits for such vehicles on other roads. This sign's primary function is an absolute prohibition for specific loads, not a speed restriction for all vehicles.
A clear reference image of the 622.9 - Explosives prohibition supplementary plate road sign used in Great Britain.

The 622.9 - Explosives prohibition supplementary plate road sign may also be known by these alternative names or terms.
The 622.9 - Explosives prohibition supplementary plate road sign is part of the Great Britain Regulatory Signs category, which groups together signs with similar rules and functions.
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This regulatory sign is part of the legal control of the road. It may require a driver to stop, give way, keep to a direction, avoid a movement, stay out of a restricted area, or respect a vehicle-specific rule. In practice, the sign should be read with the stop line, lane markings, road layout, and any supplementary plates so the instruction is obeyed before the controlled point. It is listed in the catalogue as code 615.
This regulatory sign is part of the legal control of the road. It may require a driver to stop, give way, keep to a direction, avoid a movement, stay out of a restricted area, or respect a vehicle-specific rule. In practice, the sign should be read with the stop line, lane markings, road layout, and any supplementary plates so the instruction is obeyed before the controlled point. It is listed in the catalogue as code 651.
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