Abstract
The paper addresses the driving dynamics of emergency fire trucks. It focuses on the issues of braking, measuring real braking distances and calculating adhesion coefficients. It presents the results of measuring the real braking distances for firefighting vehicles - type water tenders. Measurements were taken on dry asphalt and depending on the vehicle's speed of travel. Experiments were conducted on five types of firefighting vehicles. The results of measurements are mainly used by fire protection units to the drivers’ self-education to improve safety when driving to intervene.
Highlights
The paper follows a previous publication by the authors [1]
The lower right-hand image shows the path of the vehicle when measuring the braking distance
The resulting values were calculated by VBOX Test Suite software under the condition that the initial speed was v0 = 50 km.h-1 and the end speed was zero, when evaluating all 7 measurements
Summary
The paper follows a previous publication by the authors [1]. Braking on different types of road surface in a straight line or on a curve is one of the basic driving skills a driver needs to be able to handle in a critical situation on a road. An analysis of accident statistics for the years 2011 to 2016 [2] showed that speeding was the cause of 35 road accidents (19 %) involving water tender vehicles when driving to intervene These accidents accounted for up to 89 % of the total damage to firefighting vehicles (CZK 36.9 million = 1.45 million EUR) for the analysed period [2]. The damage to water tender-type vehicles was 51.8 million CZK = 2,04 million EUR (71 %) These facts were the reason why the co-authors address repeatedly the basic driving parameter of firefighting trucks, i.e. braking distance and its changes in different driving conditions. The test runs took place on the paved asphalt surface of two airfields and one training polygon
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