A24 Warning Sign – Cyclists, 70 cm, Class I

A24 Warning Sign – Cyclists, 70 cm, Class I

The A24 warns that cyclists use the road or the junction ahead; they are slower and harder to see than cars.

When class I is used

Class I means RA1 retroreflective sheeting, with 70 cd/(lx·m²) for white and a 7-year service life. It suits places where the sign does not compete with other lights: roads and streets without strong lighting, local, minor and private roads. In areas with many light sources, such as streets with public lighting, shop windows and advertising, SR 1848-2 requires prismatic class 2 or 3 sheeting, because a class I sign gets lost against the background there.

Where it goes, under SR 1848-1:2024

It goes on the approach to a junction with a cycle track, a place where bicycles often join the road, or a section with heavy cycle traffic. In the last case, if the section is longer than 2 km, the P8 panel goes under the sign and, where needed, the sign is repeated every 1.5–2 km.

The distance from the hazard follows the general rule for warning signs: up to 50 m in built-up areas, 100–250 m outside them and 500–1,000 m on motorways and expressways. On motorways and expressways the P4 additional panel with the actual distance is mandatory; elsewhere it is only added when the sign has to stand further back.

Technical data

• equilateral triangle with a 70 cm side (normal format, SR 1848-2), 60 mm red border, white background, black symbol;
• 1 mm galvanised steel sheet, with rounded corners and pressed edges, no sharp edges;
• electrostatically painted with UV-resistant paint;
• class I retroreflective sheeting (RA1), resistant to UV and weathering, with a 7-year service life;
• weight: 2 kg;
• 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

The pack also holds 2 clamps for Ø48 mm posts and 4 bolts with nuts for mounting on a post; clamps for Ø60 mm posts are available on request. The correct height, measured at the bottom edge, is 1.50–2.50 m above the road or kerb, and the sign stands 0.50–2.0 m from the edge of the road platform. Choose a spot where it can be seen from 50 m in built-up areas and from 100 m on roads outside them.

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 70 cm triangle is the normal format in SR 1848-2, meant for county and local roads, streets and private roads open to public traffic. National roads call for large 90 cm signs, and motorways for very large 120 cm ones.