B27, accident investigation work. Danger direction Blankenburg / Villingen-Schwenningen, between Blumberg-Riedböhringen and Hüfingen/B31

B27, accident investigation work. Danger direction Schaffhausen, between Hüfingen/B31 and Hüfingen-Behla

B27, accident investigation work. Danger direction Schaffhausen, between Hüfingen/B31 and Blumberg-Riedböhringen