Priority Signs (B)
Priority road signs
Priority signs decide who goes first: at junctions, when leaving a minor road and on narrow sections where two vehicles cannot pass side by side. Group B of SR 1848-1:2024 has six signs: B1 “Give way”, B2 “Stop”, B3 “Priority road”, B4 “End of priority road”, B5 “Priority for oncoming traffic” and B6 “Priority over oncoming traffic”.
The standard gives them shapes of their own so they can be recognised by outline alone: the upside-down triangle, the octagon and the diamond. Drivers know what to do even if they see the sign from the side or partly covered.
Which size to choose
SR 1848-2 ties the size to the road category. The B1 is 70 cm in the small format and 90 cm in the normal one, and the B2 is 60 cm and 80 cm respectively. The small format is for low-traffic local roads; county and local roads, streets and private roads open to public traffic call for the normal format. The B3 and B4 have a 60 cm side, the B5 a 60 cm diameter and the B6 a 65 cm side. For national roads and areas with a lot of ambient light, several signs come in large versions with class II sheeting, in the Metal Road Signs (Class II) category.
How they are made
They are made of 1 mm galvanised steel sheet, with rounded corners and pressed edges, no sharp edges, electrostatically painted, with class I retroreflective sheeting (RA1) that has a 7-year service life. Each one comes with 2 clamps for Ø48 mm posts and 4 bolts with nuts; clamps for Ø60 mm are available on request. The signs are CE marked and comply with SR EN 12899-1:2007, SR 1848-1:2024, SR 1848-2:2011 and SR 1848-3:2011.
Where they go
The B1 goes on the minor road at junctions with good visibility, and the B2 where visibility is poor and drivers must stop. On minor roads, signs are placed so that their face cannot be seen from the main road. The B3 confirms priority after junctions and at town exits, and the B4 goes 50–250 m before the point where priority ends. The B5 and B6 work as a pair, one at each end of a section narrower than 5.50 m. The bottom edge of the sign sits 1.50–2.50 m above the road.
Posts and public procurement
Posts for mounting are in the Road Sign Posts category. Public institutions can also buy the signs through SEAP / SICAP.
? Frequently asked questions
When do I use the B1 “Give way” and when the B2 “Stop”?
What size of B1 or B2 do I need?
Can I use the signs in a private car park or yard?
Yes. On private roads closed to public traffic, SR 1848-1 may be applied but is not mandatory, so the small format is also suitable.
Where do the B5 and B6 go?
Are the mounting clamps included?
Yes. Each sign comes with 2 clamps for Ø48 mm posts and 4 bolts with nuts; Ø60 mm on request. Posts are sold separately.
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.
- Durable products, compliant with STAS and SR EN
- ISO 9001 / 14001 / 27001 / 20671 certified
- Constant stock, delivery within 24-48 hours
- Support for municipalities, contractors, private car parks
