cleaning the

Emergency walkways/guard boards

Tunnel cleaning under taxiways (tunnel walls)

slotted gutters

Drainage pipes

drainage shafts

accident basin

as well as the necessary traffic safety for execution

The cleaning work takes place in several steps. The area to be cleaned consists of

Emergency walkways/guard boards

Tunnel cleaning under taxiways (tunnel walls)

slotted gutters

Drainage pipes

drainage shafts

accident basin

The tunnel walls are cleaned in several operations, which necessitates tunnel washing vehicles, high-pressure cleaners, large sweepers and also simple, generally used cleaning materials. Care must always be taken to ensure that when cleaning a road tunnel, the operational equipment is not damaged either mechanically or by penetrating water. Various measures listed below are carried out by the motorway maintenance department on its own. For this reason, all work must be coordinated in close coordination with the motorway maintenance department. In order to minimize interference with the traffic flow, the above mentioned components of the tunnel cross section must be cleaned in a work train in convoy.