Abstract
Horizontal curves, an element of road infrastructure, have a statistically high number of accidents. Considering that horizontal curves in the last ten years have had app. 10% of all road accidents representing app. 14% of all fatalities on Polish roads, the issue is serious and requires more research and proper road safety treatments. Data for 2007 - 2016 show that in the case of accidents on horizontal curves app. 45% of the fatalities happened as a result of crashing into roadside obstacles such as signs and first of all trees. This shows that horizontal curves require road safety equipment, and specifically, safety barriers. Key to this is using the right equipment and the right parameters. To achieve that, full-scale crash tests should be conducted to be followed by numerical tests. The article will present a synthesis of the available research conducted in Poland and abroad. An assessment will be made of four crash tests of TB32 with barriers that have a steel and cable guardrail. They are the outcome of the RID 3A “Road safety equipment” project called RoSE. Building on these tests, numerical test results will be presented.
Highlights
Key to ensuring that existing and planned road infrastructure is managed effectively and efficiently is understanding the risks to road safety on a road network, a road section or junction
Because run-off-road accidents are a frequent occurrence on horizontal curves, it is important to use the right road safety equipment, especially safety barriers, by looking at the location, type and kind
It departs from the standard because it applies to barriers on horizontal curves
Summary
Key to ensuring that existing and planned road infrastructure is managed effectively and efficiently is understanding the risks to road safety on a road network, a road section or junction. Risk sections can be identified where injuries and fatalities are likely to be high [3,4] This helps to apply road safety treatments effectively. With an estimated 40% of people killed in run-off-road accidents occurring on and around horizontal curves, it is clear how serious the problem is, i.e. a combination of horizontal curves with hazardous roadsides Horizontal curves and their parameters have a strong effect on road safety [16,17,18,19]. Because run-off-road accidents are a frequent occurrence on horizontal curves, it is important to use the right road safety equipment, especially safety barriers, by looking at the location, type (containment level, working width) and kind (cable, steel, concrete)
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