1814 = 91 88 0018 014-6 BE-SNCB and 1827 = 91 88 0018 027-8 BE-SNCB coupled together, showing their crash-optimized nose profiles. No cables between the locomotives other than the brake air hoses, they are both being pulled in "wagon mode", powered down.

Nürnberg Hbf, 2010-02-07. tobias b köhler