C25 Prohibition Sign – No Overtaking of Motor Vehicles, Except Solo Motorcycles and Mopeds, Ø80 cm, Class II

C25 Prohibition Sign – No Overtaking of Motor Vehicles, Except Solo Motorcycles and Mopeds, Ø80 cm, Class II

The no-overtaking sign with the two cars, in the large Ø80 cm format with class II prismatic sheeting. It suits national roads with bends, climbs or narrow passages, where the prohibition has to be seen from far away, day and night.

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 at the start of the section where motor vehicles may not overtake any motor vehicle, except solo motorcycles and mopeds. The end of the section is marked with the C35 (End of no overtaking); in the same sheeting class and format, that is the C35_II.

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 disc, red border and white background, with a red car beside a black car;
• 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 C25.