C37 Prohibition Sign – No Stopping, Ø80 cm, Class II

C37 Prohibition Sign – No Stopping, Ø80 cm, Class II

The blue disc with a red border and red X, in the large Ø80 cm format with class II prismatic sheeting. It is used on national roads running through towns and on busy main streets, where any stop blocks a lane.

Why class II

Class II means RA2 prismatic sheeting, which sends back three to four times more light than class I sheeting. It matters on fast roads and wherever the sign is seen at an angle, and in areas with street lighting, shop windows and advertising SR 1848-2 explicitly requires it, alongside class 3. The sheeting has a guaranteed 10-year service life.

Where it goes, under SR 1848-1:2024

It goes on road sections where stopping is prohibited, under the same conditions as the C36 (No parking): at the start of the section, with the P9 additional panel showing the start and length of the zone; without that panel, the prohibition lasts until the first junction. The section can also be marked with the P10, P11 and P12 panels (start, repetition and end of the zone), whose arrows can be applied directly on the sign. Exemptions are shown with the P34 (except residents) or P18 (exempted vehicle categories).

As a general rule, prohibition and restriction signs go just after the junction before the restricted section, so that drivers can choose another route without having to turn back. Along the section, the sign is repeated after every junction, so the prohibition also applies to traffic joining from side roads. If the prohibition starts some distance after the sign, the P4 additional panel with the distance goes under it.

Technical data

• 80 cm diameter blue disc with a red border and a red X;
• 1 mm galvanised steel sheet, with 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 80 cm diameter is the large format in SR 1848-2, required on national roads; motorways use the very large 100 cm format. County and local roads, streets and private roads open to public traffic only need the normal Ø60 cm format: the class I sheeting version is the C37.