SELECTED ASPECTS OF DRIVERS MICROCLIMATE EVALUATION by ProQuest

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									                                                                                                                   Science & Military 2/2009




                                           SELECTED ASPECTS OF DRIVERS MICROCLIMATE
                                                         EVALUATION
                                                                          Štefan ČORŇÁK

Abstract: The traffic safety is a serious issue regarding both the society and general transport. This problem has increasing
intensity in terms of increasing density of traffic and motorisation. The transport means number has been growing constantly
which has negative impact onto traffic accidents numbers. Looking at the traffic accidents statistics which has been collated
for long time period it is remarkable that the main contributors to the traffic accidents are drivers (more than 90%).
An environment quality is one of the essential contributors to the driver's reactions apart from the good life style (feeding,
corporal activities, sleeping, resting, etc.). The working place/an environment - microclimate in other words is a limited space
of the environment. Such space is affected and its state is modulated by contributors represented by energy stream and mass
stream between two environments. We can distinguish the internal microclimate according to the contributors - influencing
factors such as: thermal, optical, acoustic, air quality of the interior, etc. No other situation in terms of the microclimate
influence is at the vehicles´ area. The air quality of the driver's environment is the main contents of the contribution.

Keywords: Traffic safety, driver's environment, driver's microclimate, carbon dioxide.


1 INTRODUCTION                                                                         upon the number of road accidents. The
                                                                                       development of basic figures regarding a number of
    Traffic safety is a crucial problem of nowadays                                    vehicles, road accidents and their consequences in
society. A number of means of transport have been                                      1980 – 2008 is shown in Figure 1. [1], [7].
increasing constantly which has a negative effect
                               260

                               240            passenger cars quantity
 INDEX - Year 1980 = 100 %




                               220
                                              road accidents number
                               200

                               180            casualties number
                               160

                               140

                               120

                               100

                                80

                                60

                                40
                                 1980           1984           1988           1992          1996           2000           2004           2008


                             Figure 1 Development of basic figures regarding a number of vehicles and road accidents in the Czech Republic
                                                                            in 1980 - 2008

    Main causes of accidents are well known and                                        (a driver) can focus his attention on a certain number
might be generally divided into the accidents caused                                   of items in his view range for a limited period of
by technical and human errors. It turns out that                                       time only. After some time, usually after an hour,
systematic reliability and safety growth of technical                                  the level of attention of most human beings drops.
parts and vehicles systems as a whole can                                         
								
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