405
Sign 405: Motorway number
Explanation
Shows the number of a motorway (here A 48) – white digits on a blue background.
ⓘ Blue = motorway, yellow = federal road.
Back ←Where you learn this sign
Lesson L23 · Guide signs & motorway signageAutobahn and expressway↗Similar signs to tell apart
Sign 330.1: Motorway
Sign 330.2: End of motorway
Sign 331.1: Expressway (motor road)
Sign 331.2: End of expressway
Sign 406-50: Motorway junction number
Sign 410: European route number
Sign 448: Motorway exit announcementTest yourself on these signs
A one-minute drill: pick the right meaning for each sign.
Legal basis: § 42 StVO