Crane collision warning with OneBase®MFT

The collision warning system is designed to prevent collisions (accidents) between cranes,
by warning the crane operator of possible collisions.
The warning can be given in two different ways:

1. Visual warnings

  • Message on crane terminal
  • Lamp in crane pulpit

2.  Acoustic warnings

  • Horn on crane

A multi-level warning can be configured for the crane operator. The default preset levels are Info, Warning and Collision.
If several cranes are in an area where they can collide, the collision warning is activated. The first level at which cranes can meet is the Info level. The info level warns the crane operator that another crane is in the vicinity. Usually the warning of the info level is given as a visual message on the terminal.
If two cranes come too close, the operator is warned in the next level. The warning level informs the operator that two cranes are working directly next to each other or that there is a high risk of them colliding. Usually, the warning of the warning level is given as a visual message on the terminal and by an additional lamp in the crane pulpit.
If the warning level has been exceeded, there is a physical collision between two cranes. The collision level informs the operator that two cranes are colliding. Usually, the collision level warning is issued as a visual message and an acoustic message. In addition to the warning on the terminal and the additional lamp, a horn is also triggered, which can be placed on the outside of the crane platform.


Calculation of potential collisions

The potential collision warning levels are calculated on the basis of the defined initial collision radii, the real-time speed of the cranes and the directions of travel. The radius of each collision warning level is defined around the crane when it is at rest.

The radius of each stage increases as soon as the means of transport starts moving. This is necessary because the braking distance is increased by the speed and therefore the collision radius must also be increased.

Configuration options

  • Number and radius of collision warning stages
  • Activation/deactivation of the collision warning level display around a crane in the desktop application as well as on the crane terminal.
  • Activation/deactivation of additional visual or acoustic warnings
  • Percentage increase of radii in case of speed increase Assignment of cranes to different groups (e.g. assignment according to crane paths) to avoid unnecessary calculation capacities


Every interaction of two cranes in a collision warning level is logged. For each crane, the collision warning level, the duration in the collision warning level, the collision partner, the current position, the own speed and the speed of the collision partner are recorded. A comprehensible reporting is therefore easy to prepare.