Braking on Dry Pavement and Gravel With and Without ABS

Bartlett, Wade; Wright, William

doi:10.4271/2010-01-0066

Cited by 12 publications

(7 citation statements)

References 8 publications

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“…95% of results fell within 0.690 and 1.026. Typically, ABS produce results 14.5% higher than non-ABS supporting research of Bartlett and Wright (2010) which found that ABS produced results 14.2% higher than non-ABS.…”

Section: Figure 1 Victoria Police Drag Factor Results For Travelled B...supporting

confidence: 66%

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Proceedings of the 2021 Australasian Road Safety Conference - Melbourne

Grzebieta

2021

ARSC

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These proceedings describe research, educational and policing program implementation and policy and management strategies related to all aspects of road safety and especially related to the conference theme of Towards Zero: A Fresh Approach. The 2021 conference covers a comprehensive range of topics including speed, infrastructure and road design, education, licensing, vehicle design, impairment due to alcohol, drugs and mobile phones. The conference also presents innovative symposium sessions including interdisciplinary approaches combining safety, the law and design and showcasing successful programs involving at-risk youth, older drivers and safety approaches for non-occupants, specifically when we walk and ride a bicycle. Around 600 delegates from 28 countries attended the on-line virtual conference, held in this format because of COVID 19 restrictions. Authors of accepted Extended Abstracts and Full Papers represented international and local institutions from all aspects of their respective communities including research centres, private companies, government agencies and community groups. The Extended Abstracts and links to Full Papers presented in these Proceedings provide an indication of the important work being done in Australia, New Zealand and internationally as part of the United Nations, One UN Vision for Road Safety to reduce the number of crashes roads by 50 percent by 2030.

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Section: Figure 1 Victoria Police Drag Factor Results For Travelled B...supporting

confidence: 66%

“…However, the 3 ABS gravel tests provided a mean 18% less than non-ABS tests. Bartlett (2010) found that on gravel, ABS yields results up to 20% less than non-ABS.…”

Section: Gravelmentioning

confidence: 97%

Proceedings of the 2021 Australasian Road Safety Conference - Melbourne

Grzebieta

2021

ARSC

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“…Such models require a large number of parameters, referring to the vehicles and the environment, which can be only roughly estimated [3,38]. In particular, among others, the parameters that mostly affect the resulting motion of the vehicles are the pre-impact speed, the direction of travel, the position of the impact point [20,39], the crush coefficients [23,26,43], the coefficient of restitution [8,32,44] and the friction coefficient of the tyres on the road [2,16,41,42]. Usually a large number of simulations in which these parameters are varied are required to get the final position of the vehicle close to the one of the actual accident.…”

Section: Introductionmentioning

confidence: 99%

The effect of mass properties on road accident reconstruction

Gobbi

Mastinu

Previati

2013

International Journal of Crashworthiness

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The paper investigates the influence of vehicle mass properties (mass, centre of gravity location, inertia tensor) on accident reconstruction. Considering the case of two colliding vehicles, the paper aims at defining which is the uncertainty of each mass property that should be prescribed to obtain an accurate accident reconstruction. The paper is divided into two parts. The first part presents a mathematical model, and its validation, able to perform a proper computation of the motion of vehicles before and after crash with the data that are usually collected by operators after the accident. In the second part, a theoretical analysis shows that an accurate accident reconstruction does need accurate measurements of both the centre of gravity location and the moment of inertia of crashed automobiles. Even a small error of 10% on the estimated value of the moment of inertia of one car or of an error of 100 mm in the location of its centre of gravity can lead to errors of close to 20% on the reconstructed velocities of the two cars before the accident. An existing test rig for measuring the centre of gravity location and the inertia tensor of crashed vehicles (pre-and post-impact), meeting the measurement accuracy determined on the basis of the sensitivity analysis, is presented.

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“…Berote et al [2008] has mentioned that the main problem associated with their vehicle was its weak rollover stability and a larger yaw rate was applied at the rear wheels in comparison to that applied on the front one. Anti-lock brake systems (ABS), which are able to hinder the occurrence of skidding, can be used as a controller system [Marshek et al, 2002;Bartlett and Wright, 2010]. Bharati et al [2018] investigated the high demand use of rickshaw in the Asian countries like India, Pakistan.…”

Section: Introductionmentioning

confidence: 99%

Design and Fabrication of Prototype Battery Electric Three Wheeled Vehicles

Nabil

Elnaghi

Saeed

et al. 2019

JAEV

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Significant with the increasing expense of fossil fuel and its depletion, and the impacts emission gases from petrol vehicles are having on our atmosphere, an alternative was needed. The design and fabrication of prototype battery electric vehicles is winding up progressively especially three wheel one. Three wheeled battery electric vehicles need the most ideal design conceivable to minimize the extent of energy necessary to power the vehicle. One of the paybacks of an incorporated design is a lighter vehicle, with high efficiency as a design objective focus. The lighter the vehicle, the lesser amount of energy it will necessitate to drive, therefore less greenhouse emissions. Three-wheel electric vehicle services are: university campus, clubs, hospitals, airports, residential compounds, villas, car and goods towing, trailer to haul the trash, remote area transportation etc. This work entails for investigation, design and building of a prototype three-wheeled battery drive electric vehicle with entire simple control system. A three-wheeled battery electric vehicle as an electric mobility is being developed and tested at Suez Canal University (Egypt) and Sepang International Circuit (Malaysia). The design of the three-wheeled battery electric vehicle must have many favorable characteristics such as low mass and good aerodynamics. The vehicle designed with one seat to be thrusted by brushed motor attached on the rear wheel and powered by 48V Lithium-ion battery. The numerical study is performed by MATLAB Simulink 2017 modeling and the results recorded 140km/kWh with regenerative braking system. The fabricated three-wheel battery electric vehicle total weight is 55kg. Its tested in different tracks, many attempts, with best result 100km/kWh. Vehicle maximum speed is 60km/h and the maximum efficiency is 70% at 25km/h.

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Braking on Dry Pavement and Gravel With and Without ABS

Cited by 12 publications

References 8 publications

Proceedings of the 2021 Australasian Road Safety Conference - Melbourne

Proceedings of the 2021 Australasian Road Safety Conference - Melbourne

The effect of mass properties on road accident reconstruction

Design and Fabrication of Prototype Battery Electric Three Wheeled Vehicles

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