Freight
- Publication no: AP-R409-12
- ISBN: 978-1-921991-35-6
- Published: 3 July 2012
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This report has developed a new index, the Heavy Vehicle Roughness Band Index (HVRBI), as a measure of ride quality for heavy vehicles. The HVRBI is intended for use by road asset managers as a trigger to initiate pavement intervention works targeted at maintaining ride quality, freight productivity, safety and driver comfort for heavy vehicles.
This built on the previous research and addressed the four elements of heavy vehicle ride quality being: vehicle speed, wheelbase length, the amplitude of the road profile and the lateral vibrations that result from differences in the wheel paths. These elements were combined to produce a modified variance as an indicator of ride quality based on a half-truck model incorporating the full mechanical response of heavy vehicles affecting driver comfort.
- 3.1. Truck Ride Index
- 3.2. Truck Rotational Response
- 3.3. The Profile Index for Trucks
- 3.4. Heavy Articulated Truck Index
- 4.1. Phase I – Shepparton, Victoria
- 4.2. Phase II – St Arnaud, Victoria
- 4.2.1. Instrumentation
- 4.2.2. Vehicle
- 4.2.3. Site Selection
- 4.2.4. Testing Plan
- 4.3. Phase III – Dubbo, NSW
- 4.3.1. Instrumentation
- 4.3.2. Vehicles and Configurations
- 4.3.3. Site Selection
- 4.3.4. Test Plan
- 5.1. Processing of Data
- 5.2. Using the Australian Standard
- 5.3. Road Profile Data
- 6.1. Frequency Content of Vertical Seat Vibrations
- 6.2. Magnitude of Vibrations with Changing Speed
- 7.1. Transmission of Vibrations Through a Heavy Vehicle
- 7.2. Seat Vibrations in Different Dimensions
- 8.1. The International Roughness Index
- 8.2. The Heavy Articulated Truck Index
- 9.1. Variance as a Means of Measuring Road Roughness
- 9.2. The Magnitude of Profile Features and Roughness
- 9.3. Lateral Vibrations
- 9.4. Producing a Roughness Indicator
- 9.5. Producing a Heavy Vehicle Roughness Band Index (HVRBI)
- 9.6. Covering a Range of Heavy Vehicle Types