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Home  >  Volume 45

35. MODELLING THE RELATIONSHIP BETWEEN DRIVER WORKLOAD AND SAFETY ON RURAL TWO-LANE SINGLE CARRIAGEWAYS Igene M. O. and Ukeme U. Volume 45 (March, 2018), pp 261 – 268
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Abstract

The effect which mental work capacity (generally referred to as driver workload) has on the safety of rural two-lane single carriageways is evaluated in this research work. Furthermore, model relating accident occurrence per five (5) year period to driver workload was developed and the direction of correlation determined. Alignment data such as curve radius (R) and degree of curvature (DC) were evaluated to determine the driver workload at different curves present on Ekiadolor-Olumoye-Uhen road, a rural two-lane single carriageway in Edo state Nigeria. The accident prediction model was developed using the Generalized Linear Regression Modelling (GzLM) approach which incorporates driver workload (WL), section (L) and degree of curvature (DC). Results showed that that driver workload varies considerably, with relatively high values (0.6) at km 16.8-17.4 and km 26.6-27.8. However, modelling results showed that driver workload (WL) has a strong a positive correlation with accident occurrence per five (5) year period, which means that an increase in Driver Workload (WL) results in a corresponding increase in accident occurrence.

Keywords: Driver Workload, Geometric Design, Model, Regression.

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