The author deals in this paper with a review of reconstruction of intermediate stations for accommodation to transit speeds of 160 km/hr on the double track section of the Beograd-Zagreb rail on the Vinkovci-Novska route section with reference to the overall issue regarding the introduction of the speeds of 160 km/hr.

The fatigue of train drivers has been dealt with both from theoretical and practical standpoint in conjunction with respective examples from the practice. The appearance of fatigue has been viewed as a result of changes detected in the blood and urine, higher pulse rate, decreased ventilation of the respiratory organs etc. Owing to these changes the driver’s working capacity i. e. actual performance is reduced, he becomes sleepy without being able to resist it, so the driver falls asleep on his working post in the drive rs 's cab. To illustrate the situation the author has reviewed the severe rail accident that happened at the Zagreb Main Station in 1974. Making the driver fit for his further operation is possible only through and after an appropriate rest which refers in the first place to repose in quiet and other conditions indispensable for a sound and comfortable sleep. After such adequate rest all bodily and working functions of the driver grant a good and safety-aspected operation of the locomotive.

This paper deals with the defining of the diagnosing parameter as the moment of the piston stroke on the cylinder as expressed by the angle of the crankshaft. The established diagnosing parameter has been examined. This property is indispensable in the light of the fact that if missing the selected diagnosing parameter cannot be applied with necessary reliability for cylinder wear diagnosing. The stability of the diagnosing parameter has been verified in experiments for different values of cylinder wear.

River transport in our country, and particularly on the territory of the Republic of Croatia, creates major possibilities for services required for industries in both domestic and international transport. Considering the fact that this aspect of transport is one of the least expensive in the general transport system it should be as soon as possible reinstated an made adequate from the engineering and technological standpoint to realistically take its due place in the transport industry. Drawing a comparison of the construction of the Rhine-Main- Danube Canal to Cherna Voda-Constance and the development of other Adriatic- Danube Basin traffic routes to our actual requirements and reflections upon the condition of development of our waterways, the question is raised on the future of development of our river shipping i. e. construction of the Šamac- Vukovar canal and opening of the Sava river for navigation all the way to Zagreb.

This paper deals with major technical and utilization properties of the new system of wireless telephone communication - the TELEPO/NT. The system introduces a modified tapeless telephone technique of increase range and thus the increased mobility of the parties.

This paper deals with the definition and review of financial postal services group in the period of 1981-1989 . Based upon the review the author draws his conclusions on the existing clearly pronounced divergence in the tendencies of individual types of services, involving their division in two opposite development trends. Payment operations and banking services for different business banks show high rates of annual increase while at the same time postal money orders and banking services of the Postal Saving Bank mark steady decrease in the years of the observed period. However, viewed as a group of services (a segment) they have marked a high average annual rate of increase of6.2% for the territory of the Yugoslav Posts and 5. 5 % for the territory of the Croatian Posts due to a dominant share of the former of 93% for Yugoslavia and 95% for Croatia as compared to the latter.

This paper deals with the analysis of ergonomic aspects of traffic safety. l n this light, the following aspects have been considered: psycho-physiological, structural/system/ technical, engineering and teaching aspects. The issues raised, the principles and methods of ergonomic problems of traffic safety, through individual aspects being mutually integrated, can usefully serve the organizers and immediate operators in the process and endeavors of raising traffic safety to a more advanced level.