Title: fBRAKE: alternative methodology for braking efficiency determination on vehicle technical inspection according to Directive 2010/48/EU

Authors: Álvaro Barba Nieto; José Luis San Román García; Vicente Díaz López; Antonio Gauchía Babé

Addresses: Avda. Universidad 30, Edificio Agustín de Betancourt, 28911 Leganés, Madrid, Spain ' Avda. Universidad 30, Edificio Agustín de Betancourt, 28911 Leganés, Madrid, Spain ' Avda. Universidad 30, Edificio Agustín de Betancourt, 28911 Leganés, Madrid, Spain ' Avda. Universidad 30, Edificio Agustín de Betancourt, 28911 Leganés, Madrid, Spain

Abstract: Vehicle brake efficiency, for a fully loaded vehicle scenario, is computed by means of Directive 2010/48/EU. According to this Directive, brake efficiency must be calculated using vehicle's maximum authorised mass (MAM) value instead of the real weight measured during the inspection. However, vehicles, such as buses and those assigned for transportation of hazardous merchandise, cannot be tested under fully loaded conditions. Directive 2010/48/EU allows obtaining the braking forces that develop fully loaded vehicles using the extrapolation method proposed by the ISO 21069. However, this method is only applicable for vehicles with purely pneumatic brakes and equipped with standard pressure taps. This paper presents a novel simulation model, which extrapolates maximum braking forces measured in the periodic technical inspection (PTI) stations regardless of the type of brake system and regardless of vehicle loading condition during which brake force is measured on the brake roller tester of the PTI station.

Keywords: braking efficiency; vehicle technical inspection; Spain; EU Directives; Directive 2010/48/EU; ISO 21069; heavy vehicles; maximum braking force; Directive 2009/40/CE; maintenance; available adherence; braking system pressure; European Union; vehicle brakes; simulation; modelling.

DOI: 10.1504/IJHVS.2015.073200

International Journal of Heavy Vehicle Systems, 2015 Vol.22 No.4, pp.311 - 337

Received: 17 Nov 2014
Accepted: 22 Apr 2015

Published online: 27 Nov 2015 *

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