engleski

Comparative Ergo-assessment of Control Panel for New Trams Produced in the Republic of Croatia and Bosnia and Herzegovina

Among the most frequently used commands while operating trams in Bosnia and Herzegovina and the Republic of Croatia are: "dead man" function, brake module, accelerator, horn or bell, flashing light button, direction indicators, switching or blocking points, and commands for manipulation of the doors in passenger area. During design the most commonly used commands and their indicators for manual serving must be located according to the following criteria: within the range predominantly of normal arm reach in the central 90% of the tram driver population, inside biacromial range (shoulder width) in the central 90% of the tram driver population, within the vision field of the tram driver without turning their head, taking into account the circumstance that most of the drivers are righties and few are lefties and equally well in using the right hand, with the use of multi-purpose controller for an arm (group-related commands accelerator, brake modules and “dead man”), and in all circumstances respecting the instrumental (operational) conditioned reflexes of tram drivers. This paper presents a comparative ergo-assessment of driving cabs and control panels for the latest models of trams in Sarajevo (Satra II, produced by GRAS Sarajevo in B&H under license ČKD PRAHA which operates in Sarajevo) and Zagreb (TMK 2200, produced by Crotram manufacturers consortium in RC, which operates in Zagreb). The construction major failures were noted and this has negative effect on the drivers due to inconsistency between the sensory and motoric function and the absence of cognitive approach to study the drivers’ needs. This results in increased driver perception response time and increased difficulty of the tram drivers’ task.

the most commonly used commands; sensory and motor functions; instrumental conditioned reflex; task difficulty; cab design

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