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Investigating snowplow-related injury severity along mountainous roadway in Wyoming

Haq Muhammad Tahmidul, Reza Imran, Ksaibati Khaled

Journal of Sustainable Development of Transport and Logistics

2023

Vol. 8, No. 1

73--88

Snow removal and deicing using snowplow trucks assist transportation agencies to enhance roadway safety and mobility. However, due to slower travel speeds during these operations, motorists often end up in crashes for poor visibility and disturbance of the snow. Despite the risk associated with snowplows, no previous study was found that exclusively investigate the factors associated with injury severity in snowplow-involved crashes. Therefore, this paper presents an extensive exploratory analysis and fills this knowledge gap by identifying the significant contributing factors affecting the occupant injury severity from the aspects of crashes with snowplow involvement. The study utilized eleven years (2010-2020) of historical snowplow-related crash data from Wyoming. Both the binary logit model and mixed binary logit model were developed to investigate the impacts of the various occupant, vehicle, crash, roadway, and environmental characteristics on the corresponding occupant injury severity. As one of the important findings from this research concludes that other vehicle drivers are more responsible than snowplow drivers contributing to more severe injuries in crashes involving snowplows. Recommendations suggested based on the modeling results are expected to help transportation agencies and policymakers take necessary actions in reducing snowplow-involved crashes by targeting appropriate strategies and proper resource allocation.

Examination of selected cleaning service equipment in the scope of airfield's movement areas maintenance

Kowalska Danuta, Wesołowski Mariusz, Pietruszewski Paweł

Prace Naukowe Politechniki Warszawskiej. Transport

2020

z. 128

7--17

Maintaining airport surfaces in good condition and in a good state of cleanliness throughout the year is of extreme importance to ensure the safety of flight operations by aircraft. The use of various equipment is practicable in order to clean regularly all paved surfaces. Components of brushes and plows during operation wear out and must be replaced periodically. New elements should be of adequate quality. Examples of airport cleaners and exchangeable cleaning elements are presented. Some requirements have also been given on the brushes’ bristles. To confirm the need to control the purchased cleaning elements, the condition of worn components was checked. The results of laboratory tests of new and used brushes bristles are presented. The tests included microscopic observations, microstructure assessment, tensile strength testing, and microhardness testing. Defects in fixing the bundles of polymer brush bristles during airport exploitation were found. Research on steel wires showed a partial loss of the zinc coating during the brush operation (potential corrosion), lowering the tensile strength and increase the hardness of the wires, which could lead to wires crack and break. The article confirmed the need to control of brushes and plows parameters to ensure their proper quality. Their selected parameters should be controlled during purchase and operation on airfields belonging to the Polish Armed Forces. The impact of deicing agents on the elements mentioned above should also be considered.