ZÖLLNER – Safety for today and tomorrow. Worldwide. To make track worksites safer, ZÖLLNER has been developing, producing, an ... d selling automatic warning systems for track worksites since the 90s. If a track vehicle approaches a construction area, the Autoprowa® system warns all people working on the track area with a warning signal automatically adjusted for the ambient noise level. The modules of the system can be combined and thus allow for an efficient and optimal securing for every situation. ZÖLLNER UK Ltd provides equipment sales, technical support training, a hotline, servicing, repair and recalibration for equipment supplied by ZÖLLNER GmbH. read more