DSpace Collection: CASR Research ReportsCASR Research Reportshttps://hdl.handle.net/2440/389252024-03-19T04:42:45Z2024-03-19T04:42:45ZAn assessment of ACT road infrastructure for compatibility with Advanced Driver Assistance SystemsMackenzie, J.van den Berg, A.Ponte, G.https://hdl.handle.net/2440/1404442024-03-18T04:58:06Z2024-01-01T00:00:00ZTitle: An assessment of ACT road infrastructure for compatibility with Advanced Driver Assistance Systems
Author: Mackenzie, J.; van den Berg, A.; Ponte, G.
Abstract: To explore the compatibility of the ACT road network with modern vehicle ADAS, an instrumented vehicle was driven throughout the Territory to collect data over a period of five days. Feedback from the consultation of ACT road infrastructure stakeholders was used to assist in the selection of roads for data collection, which included all main highways as well as significant proportions of the urban and rural arterial network. The instrumented vehicle was fitted with a Mobileye dev-kit and Video Vbox HD2 system which provided the capability to collect details about what a commercial-grade ADAS is able to “see” while travelling through the road network. There were 759,772 points of data collected over 1,349 km of roadway during the study along with the detection of 1,963 speed limit signs. This dataset was then analysed to investigate what details regarding line markings and speed limit signs the Mobileye was able to detect. These analyses were also augmented with additional data obtained from the Open Street Map road network. Based on the analyses, high-resolution maps were generated that show ADAS is likely to have a good compatibility with the ACT road network in general. Geographic datasets were also generated as an output, providing an opportunity for further analyses.2024-01-01T00:00:00ZCollection and analysis of EDR data from crash-involved vehicles: 2021 summary reportElsegood, M.Doecke, S.Ponte, G.https://hdl.handle.net/2440/1399862023-11-28T04:21:20Z2023-01-01T00:00:00ZTitle: Collection and analysis of EDR data from crash-involved vehicles: 2021 summary report
Author: Elsegood, M.; Doecke, S.; Ponte, G.
Abstract: Modern vehicles are fitted with Event Data Recorders (EDRs) that constantly record variables such as speed, seatbelt usage, accelerator/brake pedal position, and steering wheel angle. When a crash occurs, a snapshot of the final few seconds of these variables are saved on the EDR in addition to crash related variables such as change in velocity (delta-v) and safety system deployments. In 2017, CASR established a data collection process whereby a large number of crash-involved vehicles could be accessed regularly from a single location (an auction yard) and the EDR data downloaded. Additionally, the South Australian Police Major Crash unit provided EDR data to CASR, downloaded from vehicles involved in investigated serious crashes. In 2021, CASR successfully retrieved EDR data from 171 crashed vehicles, of which 143 (83.6%) had associated police vehicle collision reports. This collection has contributed to a current total of 827 EDR records with 639 matched to police reports and 171 injured occupants matched to hospital injury data. In the sample of cases collected by CASR from the auction yard, 27.1% of bullet (striking) vehicles, and 40.3% of free-speed vehicles were found to be speeding. The rate of seatbelt wearing for front seat occupants in the sample was 96.9%.2023-01-01T00:00:00ZThe contribution of driver fatigue to casualty and fatal crashes in South AustraliaThompson, J.Wundersitz, L.https://hdl.handle.net/2440/1399852023-11-28T04:21:21Z2023-01-01T00:00:00ZTitle: The contribution of driver fatigue to casualty and fatal crashes in South Australia
Author: Thompson, J.; Wundersitz, L.
Abstract: Determining whether fatigue (referring to a person falling asleep or experiencing deficits in functioning due to being tired, drowsy, or sleepy) is involved in a motor vehicle crash is difficult. Consequently, there is high variability in estimates of the contribution of fatigue to crashes. This study explored the contribution of driver fatigue to casualty and fatal crashes in South Australia, as well as the role that fatigue played in the crashes, the risk factors that led to the fatigue and the countermeasures that could have prevented the crashes. Data from two sources were examined: in-depth at-the-scene investigations of casualty crashes by the Centre for Automotive Safety Research (2014 to 2019) and Coroner reports on fatal crashes (2014 to 2015). Fatigue-related crashes were identified through evaluation of various forms of evidence (e.g., from crash participant/witness interviews, events preceding the crash). Fatigue contributed to 4.3% of casualty crashes and 11.5% of fatal crashes. Most fatigue crashes occurred during daylight hours (72.4%), on high-speed roads (86.2%), and at midblock locations (89.7%), and most (82.8%) involved the driver falling asleep, leading to the vehicle departing its lane, and either rolling over or colliding with a roadside object or oncoming vehicles. The most common risk factors for fatigue were long distance driving (41.4% of crashes), no/reduced/broken sleep (27.6% of crashes), illicit drug use (17.2% of crashes), and abnormal work/sleep routines (17.2% of crashes). The countermeasures that could have prevented the most fatigue crashes were lane keep assist (could have prevented 79.3% of crashes), lane departure warnings (65.6%), drowsiness detection/warnings (55.2%), audio tactile centre lines (41.4%), and autonomous emergency braking (34.5%). Vehicle technologies, therefore, comprised four of the five most common countermeasures. This study was the first, of which the authors are aware, to estimate the contribution of driver fatigue to crashes within South Australia.2023-01-01T00:00:00ZA novel low-cost Safe System-aligned treatment for regional and remote intersectionsMongiardini, M.Stokes, C.https://hdl.handle.net/2440/1399832023-11-28T04:19:03Z2023-01-01T00:00:00ZTitle: A novel low-cost Safe System-aligned treatment for regional and remote intersections
Author: Mongiardini, M.; Stokes, C.
Abstract: An intersection active warning system aiming to improve vehicle safety at intersections has been developed and trialled. This system, named RJAWS Lite, is an advisory variation of the existing mandatory-speed based RJAWS and provides two major visual warnings: (i) speed advisory on major approaches and (ii) run-through prevention on the minor approach. A controlled before-after analysis conducted on speed data from a trial at six rural intersections in South Australia indicates that RJAWS Lite can provide substantial safety benefits, albeit to a lesser degree than the full version of the RJAWS. Nonetheless, the RJAWS Lite involves considerably lower equipment and installation costs, combined with less restrictive regulations, than the mandatory full version of the RJAWS and so could be expected to be suitable for more widespread installation, which could therefore effectively increase road safety at a larger number of rural junctions. Future streamlining of the current large billboard-style RJAWS signage may likely contribute to improve driver compliance with the advised speed and therefore further increase the predicted safety benefits.2023-01-01T00:00:00Z