Road Sign J21 – “International Road Number”

The road sign J21 indicates the road number according to the international classification, helping drivers navigate correctly on international and cross-border routes. It facilitates safe driving on roads connecting different countries.

Shape and Appearance:
The sign is a blue rectangle with a white border, displaying the road number according to international standards (e.g., E-roads).

Meaning:
J21 informs drivers of the official road number under international classification, helping orientation and preventing confusion when crossing countries.

Dimensions:
According to Regulation No.18 on road signage:

• Urban areas: 400 x 300 mm

• Outside urban areas: 600 x 400 mm

• Highways or high-speed roads: 800 x 500 mm

Materials and Manufacture:
Made of reflective film Class 1 or 2 on galvanized steel or aluminum plate, ensuring good visibility day and night.

Application:
The J21 sign is placed along international routes and at intersections to inform drivers of the international road number and facilitate safe travel.