Investigation of Braking System (Efficiency) of Converted Mercedes Benz Buses (207)

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Author(s) S.K. Amedorme | Y.A.K. Fiagbe
Pages 754-762
Volume 2
Issue 11
Date November, 2013
Keywords 207 bus, conversion, Brake efficiency Haram, Dominant strategy, Game theory, Nash equilibrium, Payoff matrix.
Abstract

Road accidents as a major cause of misery, morbidity and mortality in Africa particularly in Ghana have been of considerable concern to the general public. More worrying is the accidents involving Benz 207 buses. Mercedes Benz “207” bus when brought into the country is converted to passengers’ bus by artisans in ‘fitting workshops’ in and around the country. This conversion increases the gross weight, affects the suspension and the stability of the vehicle. Also, a serious effect is that the performance of the braking system may be affected. This paper highlights the braking efficiency of the converted Mercedes Benz 207 bus as against that of the original and compared to the safest degree of efficiency required for these buses. The gross weight of the original bus was increased by an average of 20% after conversion. The results show that 60% of the buses have no parking brakes and between 20%-30% were having defective or no rear brakes. Also, 70% of the converted buses have their braking efficiencies decreased whilst 20% had increased braking efficiency with rest remaining unaffected. It was again observed that 60% of the original buses tested fell within the standard value required for the front imbalance and 50% of the converted buses exceeded the maximum value for the front imbalance.

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