Studies from six different driver environments are reported: three of which were literature studies concerning the environmental areas noise or infrasound, climate and vibrations. The three remaining studies were carried out as surveys in real buses and in a mockup of the driver's cab and comprised measurements of the driver's cab, visibility from the driver's cab and the handling of tickets from an ergonomic point of view. The studies have shown that present Swedish citybuses should be improved in several respects thus paying attention to recent research findings within current environmental areas. Recommendations for changes are given in the report in respect to all areas included. The most important recommendations are: increased total volume for the driver, increased adjustment of the seat, both horizontally and vertically, increased steering-wheel adjustment, reduction of structures blocking the direct view forward and to the sides, improvement or addition of mirrors and other devices to increase indirect visibility, improved climate comfort by adding cool air and/or improved fresh air ventilation to the driver's cab in summertime, and the possibility of adjusting the ticket machine in its installation for good operator comfort, irrespective of manufacture. (A) See also IRRD No. 829716 part 1 of this study.
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