Findings from Ministry of Education Update Knowledge of Risk Management (Speed change behavior on combined horizontal and vertical curves: driving…

Findings from Ministry of Education Update Knowledge of Risk Management (Speed change behavior on combined horizontal and vertical curves: driving simulator-based analysis)

By a News Reporter-Staff News Editor at Insurance Weekly News -- Fresh data on Risk Management are presented in a new report. According to news reporting out of Shanghai, People's Republic of China, by VerticalNews editors, research stated, "Road alignments that combine horizontal and vertical curves on freeways have effects on drivers' speed changes that can lead to safety problems. This study examines speed changes on four types of combined curves: downslope, upslope, crest and sag."

Funders for this research include Chinese National Science Foundation, 111 Project.

Our news journalists obtained a quote from the research from the Ministry of Education, "From design blueprints for a mountainous freeway under construction in Hunan Province, a total of 70 combined curves were programmed into the Tongji University driving simulator. Study participants drove through the simulated freeway while vehicle operation data was continuously captured. Speed changes on the combined curves were determined by calculating the differences between minimum and maximum speed values, and were classified into three behaviors: substantial speed decrease, steady speed (minimal change), and substantial speed increase. Multinomial logit models were used and the marginal effects of each variable were calculated in order to examine the effects on speed change behavior of each combined curve type and their adjacent segments. 1) the speed change behaviors on the four types of combined curves differ in frequency, 2) the significant effects of geometric design characteristics on speed change differed by type of combined curve, and 3) design characteristics of adjacent segments also have significant and varying effects on speed change."

According to the news editors, the research concluded: "Combined curves should therefore be studied separately, and their adjacent segments should be considered when combined curves are planned."

For more information on this research see: Speed change behavior on combined horizontal and vertical curves: driving simulator-based analysis. Accident Analysis and Prevention, 2018;119():215-224. Accident Analysis and Prevention can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; Accident Analysis and Prevention - www.journals.elsevier.com/accident-analysis-and-prevention/)

Our news journalists report that additional information may be obtained by contacting X.S. Wang, Minist Educ, Key Lab Rd & Traff Engn, Shanghai, People's Republic of China.

The direct object identifier (DOI) for that additional information is: https://doi.org/10.1016/j.aap.2018.07.019. This DOI is a link to an online electronic document that is either free or for purchase, and can be your direct source for a journal article and its citation.

Keywords for this news article include: Shanghai, People's Republic of China, Asia, Risk Management, Ministry of Education.

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