Roaduser International's Books

Performance-based Controls for Truck and Dog Trailer Combinations

By: Roaduser International,Chris Blanksby

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Performance-based Controls for Truck and Dog Trailer Combinations

By: Roaduser International,Chris Blanksby

Concerns raised by the road transport industry in mid 1998 regarding truck-trailer operations resulted in the NRTC commissioning Roaduser International Pty Ltd to research and assess the application of performance criteria for on-road stability, based on computer simulations. The consultant has developed the attached report which indicates in part, that the stability performance of truck-trailer combinations is dependent on the CoG of the trailer (predominantly), longitudinal dimensions and the tow coupling rear overhang. The report indicates that: truck-trailer combinations with high CoG remain of concern; acceptable stability can be achieved by adjusting critical design dimensions; the most common usage for truck-trailers appears to be for transportation of quarry products and these seem to possess adequate stability; only limited details on accidents involving truck-trailers at the higher mass limits were found; there is no evidence at this stage of significant fleet conversion.

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ISBN 10

0642544379

ISBN 13

9780642544377

In-service Assessment of Road-friendly Suspensions

For Information

By: Roaduser International,P. F. Sweatman,S. Macfarlane,J. Komadina,D. Cebon

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In-service Assessment of Road-friendly Suspensions

For Information

By: Roaduser International,P. F. Sweatman,S. Macfarlane,J. Komadina,D. Cebon

The results of this study, involving a limited sample of vehicles from medium to large fleets, indicate that inservice non-road-friendliness of air-suspended triaxle groups is a manageable issue once the OE-type approval test is in place. The effects of suspension, and particularly shock absorber wear in eroding the benefits of road-friendliness are incremental rather than dramatic. The emphasis in controlling road-friendliness in-service could therefore lie in the introduction of auditable suspension maintenance regimes utilising the following activities at prescribed intervals: shock absorber removal and inspection for defects, dynamometer testing and shock absorber replacement.

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152

Published Date

ISBN 10

0642544522

ISBN 13

9780642544520

Performance Based Standards for Heavy Vehicles in Australia

Field of Performance Measures

By: P. F. Sweatman,Roaduser International,E. Ramsay,J. Lambert,Hans Prem

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Performance Based Standards for Heavy Vehicles in Australia

Field of Performance Measures

By: P. F. Sweatman,Roaduser International,E. Ramsay,J. Lambert,Hans Prem

The limitations of traditional approaches to the regulation of heavy vehicles on the basis of length, height, width and axle mass are increasingly apparent; constraints on innovation in vehicle design, and risks to road safety, efficient traffic operations and infrastructure. The current incremental approach or "creep" is also a significant concern for the transport industry, as are the limitations to innovation and productivity of an overly prescriptive approach to regulation. As the first step in the establishment of performance standards, Roaduser International Pty Ltd and ARRB Transport Research Ltd were commissioned by the National Road Transport Commission (NRTC) and Austroads to investigate and document the field of performance standards which are considered relevant for heavy vehicles. The performance measures described represent a comprehensive list relating to the key outcomes of safety performance, traffic impacts, geometric effects, access and infrastructure effects. productivity and amenity measures are also identified. The report identifies, defines and explores a core group of performance measures for practical use in PBS and also considers the extent to which these measures are influenced by road and traffic conditions. Consideration is also given to the practical implications of the core performance measures for use in regulations and consequent issues for compliance and enforcement.

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ISBN 10

0642544506

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9780642544506

Book's by Roaduser International

Performance-based Controls for Truck and Dog Trailer Combinations

Performance-based Controls for Truck and Dog Trailer Combinations

In-service Assessment of Road-friendly Suspensions

In-service Assessment of Road-friendly Suspensions

Performance Based Standards for Heavy Vehicles in Australia

Performance Based Standards for Heavy Vehicles in Australia

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