C23 Prohibition Sign – No Right Turn, Ø80 cm, Class II
- Prohibition sign C23 “No right turn”, to SR 1848-1:2024.
- 80 cm diameter disc, in 1 mm galvanised steel sheet.
- Class II (RA2) prismatic sheeting, guaranteed 10-year service life.
- Fixings included: 2 clamps for Ø48 mm posts and 4 bolts with nuts.
- CE marked; sheeting and paint resistant to UV and weathering.
Complementary products
General features
| SR 1848-1 code | C23 |
|---|---|
| Name in the standard | No right turn |
| Type | Prohibition or restriction road sign |
| Shape and colours | 80 cm diameter disc, red border and white background, with a black right-turn arrow crossed by a red bar |
| Size | Ø80 cm |
| Format (SR 1848-2) | Large |
| Material | Galvanised steel sheet, 1 mm |
| Construction | Pressed edges, no sharp edges |
| Painting | Electrostatic, UV-resistant paint |
| Retroreflective sheeting | Class II (RA2), prismatic, UV-resistant |
| Retroreflection (white, 0.2°/5°) | 250 cd/(lx·m²) |
| Sheeting service life | 10 years (SR 1848-2) |
| Fixings included | 2 clamps, 4 bolts with nuts |
| Post diameter | Ø48 mm (Ø60 mm on request) |
| Standards | SR EN 12899-1:2007, SR 1848-1:2024, SR 1848-2:2011, SR 1848-3:2011 |
| Marking | CE |
| Weight | 5 kg |
| Height | 80 cm |
Product description
C23 Prohibition Sign – No Right Turn, Ø80 cm, Class II
The Ø80 cm disc that prohibits turning right, with class II prismatic sheeting. The large format is the one required on national roads, and the sheeting keeps it visible at lit town junctions, where it competes with traffic lights and advertising.
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 before or level with the junction where turning right is prohibited, and the prohibition applies only at that junction, not at the following ones. The sign can also be mounted above a lane, in which case the prohibition applies only to that lane.
Technical data
- 80 cm diameter disc, red border and white background, with a black right-turn arrow crossed by a red bar;
- 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 C23.
? Frequently asked questions
Where does it go?
It goes before or level with the junction where turning right is prohibited, and the prohibition applies only at that junction, not at the following ones. The sign can also be mounted above a lane, in which case the prohibition applies only to that lane.
How does it differ from the class I sheeting version?
It is larger than the C23: Ø80 cm instead of Ø60 cm, and the class II (RA2) prismatic sheeting returns three to four times more light, with a guaranteed 10-year service life instead of 7.
Can I use the Ø60 cm version on a national road?
No. SR 1848-2 forbids using signs smaller than the format set for the road's category. National roads require the large Ø80 cm format, and motorways the very large Ø100 cm format.
When is class II sheeting mandatory?
SR 1848-2 requires prismatic class 2 or 3 sheeting in areas with many light sources: street lighting, shop windows, advertising, dense urban areas. Elsewhere, class II is chosen for better visibility on fast roads and where the sign is seen at an angle.
Which fixings come with it?
The pack holds 2 clamps for Ø48 mm posts and 4 bolts with nuts. Clamps for Ø60 mm posts are available on request, a better fit for large signs or windy locations.
How far does the prohibition apply?
Only at the junction before or at which the sign is installed. At the next junction, the prohibition no longer applies unless the sign is repeated.
Which post should I order?
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 which you ask for the Ø60 mm clamps when you order.
Is the sign CE marked?
Yes. It is CE marked and complies with SR EN 12899-1:2007, the European standard for vertical road signs, and with SR 1848-1:2024, SR 1848-2:2011 and SR 1848-3:2011. The sheeting and the paint resist UV and weathering.
Ordering and delivery
Can I order as a private individual?
Yes. You order directly on the site, as an individual or a company, and pay by card or cash on delivery.
Do I get an invoice?
Yes. Every order comes with a tax invoice, issued to an individual or a company.
Can I buy through SEAP / SICAP?
Yes. Public institutions find us in SICAP as S.C. ATTO REGAL S.R.L. Our company details are on the Purchase through SEAP / SICAP page.
How long does delivery take?
We deliver by courier within 24-48 hours.
Can I return the product?
Yes. As a private individual you can return the product within 14 days of receiving it, as the law provides, and you get your money back within 14 days of telling us. Return shipping is paid by the customer. The full terms are on the Return policy page.
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C23 Prohibition Sign – No Right Turn, Ø80 cm, Class II (C23_II)
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In road safety since 1998
Atto Trafic supplies complete road signage and safety equipment — signs, traffic signs, markings, parking barriers, speed bumps, mirrors, bollards and accessories.
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