The ARNOLD Flagged Wheel Chock is equipped with a signal flag indicating that the wheel chock is blocking the wheel during loading processes. The way the flagpole is mounted guarantees extra high visibility. So, the driver can easily recognize if the van is blocked by locking in the driving mirror or from the car window. The red side of the flag shows if the van is blocked (from the driver’s perspective). At the same time its green coloured counter-side indicates that the van is ready for loading or unloading (from the staff’s perspective on the loading area). The integrated handle bar permits easy handling of the device.