A38 Warning Sign – Roundabout Ahead, 90 cm, Class II

A38 Warning Sign – Roundabout Ahead, 90 cm, Class II

The roundabout warning in the large 90 cm format, with class II prismatic sheeting. It is used on national roads and at large roundabouts at the entrance to towns, where the junction must be seen from a distance.

Why class II

Class II (RA2) prismatic sheeting returns roughly three to four times more headlight to the driver than class I sheeting, so the sign can be seen from further away at night and stays legible when viewed at an angle. SR 1848-2 requires prismatic class 2 or 3 sheeting in areas with many light sources, such as streets with public lighting, shop windows and advertising, where a class I sign gets lost in the background. Class II sheeting has a guaranteed 10-year service life, against 7 years for class I.

Where it goes, under SR 1848-1:2024

It goes on the approach to a roundabout junction.

As a general rule for warning signs, they go no more than 50 m before the hazard in built-up areas, 100–250 m before it outside built-up areas and 500–1,000 m before it on motorways and expressways, with the P4 additional panel showing the distance.

Technical data

• equilateral triangle pointing up, 90 cm side, red border and white background, with the three roundabout arrows;
• 1 mm galvanised steel sheet, with rounded corners and pressed edges, no sharp edges;
• electrostatically painted with UV-resistant paint;
• class II (RA2) prismatic retroreflective sheeting, resistant to UV and weathering, with a guaranteed 10-year service life;
• fixings included: 2 clamps for Ø48 mm posts and 4 bolts with nuts;
• CE marked; compliant with SR EN 12899-1:2007, SR 1848-1:2024, SR 1848-2:2011 and SR 1848-3:2011.

Mounting and size

Fixings for the post are included: 2 clamps for Ø48 mm posts and 4 bolts with nuts; clamps for Ø60 mm posts are available on request. The bottom edge of the sign goes 1.50–2.50 m above the road or kerb, and the edge nearest the road 0.50–2.0 m from the road platform.

The post is ordered separately. For a fixed installation in a concrete foundation: the galvanised Ø48 mm post, 300 cm. For temporary use, with no foundation: the Ø48 mm tripod post, 120 cm. On concrete or paving, where you cannot dig: the Ø60 mm flange post, 300 cm, bolted down; for it, ask for the Ø60 mm clamps when you order.

The 90 cm triangle is the large format in SR 1848-2, required on national roads; the normal 70 cm format is for county and local roads, streets and private roads open to public traffic. The 70 cm version with class I sheeting is the A38.