laterally from one side of the vehicle to the other because no additional units are attached to the sides of the vehicle an effective through flow is possible a layout of the air lines in the longitudinal direction would be disrupted by the counterweight which is located behind the mounting device 13 and could create an unpleasant draft in the vicinity of the operator 39 s feet depending on the gaseous medium used the air flow in the mounting device 13 should be designed by the suitable placement of ventilation openings so that no flammable mixtures of gases can accumulate in the mounting device 13 information can be exchanged between the mounting device 13 and the industrial truck 5 by means of suitable connections such as a bus system for example control and monitoring devices can be installed in a fixed and permanent manner in the industrial truck for the various operating systems used for the generation of electrical energy i e such as fuel cells internal combustion engine and battery these devices can be located on the driver 39 s control console thereby making it possible for the operator to have all or most of the information that is important for operation such as the amount of fuel in the tank or the charging status operating temperatures or.