The red sign in this photo means no entry to traffic. The word uitgezondered means "except" in Dutch. So this sign indicates that bikes and scooters are permitted in this direction, although cars aren't.
From Shannon McAllister, former About.com Guide
The red sign in this photo means no entry to traffic. The word uitgezondered means "except" in Dutch. So this sign indicates that bikes and scooters are permitted in this direction, although cars aren't.