Road Sign Dangerous Shoulder Triangle Side 90 cm Class 1 Fig. 21 Galvanized iron sheet

The Dangerous Dock Warning Sign: Safety and Regulatory Compliance

What does the "Dangerous Quay" sign (Fig. 21) mean?

This triangular sign is a danger sign in accordance with Figure II.21 of the Regulations for the Implementation of the Highway Code (Presidential Decree 495/1992, art. 92). Its primary function is to warn of a stretch of road where the outer edge of the carriageway (the side shoulder) presents significant risks: it may be unstable, yielding, bumpy or impassable. This includes ditches, deep ditches or embankments close to the roadway, which could cause the vehicle to lose control if it pulls over.

Technical Characteristics and Materials of the Road Sign

Made of galvanized iron sheet 10/10 mm (1 mm) thick, this sign guarantees strength and durability over time. Its shape is an equilateral triangle with a side of 90 cm, a standard size to ensure excellent visibility, especially in extra-urban contexts or where the perception of danger must be timely. The Class 1 (RA1) reflective film ensures clear visibility even in low light or at night, further increasing safety for drivers.

Specific Colors and Pictogram

The sign has a white background with a red border, typical of warning signs. In the centre, a black pictogram depicts a vehicle tilting towards a subsiding shoulder, communicating the nature of the hazard in an immediate and intuitive way.

Installation and Applications

The sign has rear attachments, usually two vertical channels, for easy mounting on standard galvanized poles. It can be installed individually or, for greater effectiveness, combined with supplementary panels specifying, for example, the length of the hazardous section. The "Dangerous Quay" sign is mainly used on rural roads, paths with embankments or embankments, in areas with unpaved, landslides or bumpy shoulders, and on bridges with a narrow carriageway without sidewalks. Its objective is to warn the driver of the need to keep the trajectory in the center of the lane, avoiding approaching the margin and preventing accidents.

Frequently Asked Questions about the "Dangerous Dock" Sign

What is the "Dangerous Dock" sign for?

It is used to warn drivers of the presence of a stretch of road where the side shoulder is unstable, yielding, uneven or presents dangers such as ditches and embankments, requiring attention and caution.

What are the standard sizes of this sign?

The standard size is an equilateral triangle with a side of 90 cm, designed to ensure excellent visibility, especially on non-urban roads.

Is it mandatory to use Class 1 for this signal?

Class 1 (RA1) is the minimum reflective film required to ensure good visibility of the sign in low light conditions, improving road safety.

How do I fix the signal?

The sign is prepared with rear attachments (vertical channels) to be mounted on standard galvanized poles, offering a safe and stable installation.