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Field Operational Tests (FOT) or Naturalistic Driving Studies (NDS) is necessary to evaluate advanced driver assistance system (ADAS) as well as the naturalistic driver behavior. Due to incidents (related to crash events) may lead to collision accidents, it is necessary to do the related studies on incidents to improve traffic safety. In these studies a large volume of data was collected and a lot...
In this paper, brake response time of 110 near-crash cases with cyclist is researched. Cyclists include bicyclist, electric bicyclist, motorcyclist and tricyclist. This paper refers to the time interval from the moment a collision threat appears to the moment the vehicle begins to decelerate to avoid the collision as brake response time (BRT). Values of BRT range from 0.47s to 2.13s with a mean of...
Due to very few actual crashes occurring and the deviation of the collision and environment information between the fact and post processing,the use of surrogate events like noncrash Crash Relevant Events(CREs)found in Naturalistic Driving Studies (NDS) or Field Operational Tests (FOT) is usually motivated by referring to some version of Heinrich's classical triangle to find a faster way to learn...
Advanced Driver Assistance Systems (ADAS) have great potential to enhance road safety and improve driving comfort. This paper presents the design concept of ADAS by comparing ADAS with traditional vehicle safety technologies. The concept shows that driver acceptance makes a great difference to the safety impact of ADAS. According to this conclusion, this paper also proposes the design method of ADAS...
A reasonable simplified mode is used for head impact, and this paper does some research about the necessary crash depth by simplifying the waveform of the pedestrian head impact, the optimal waveform, which using the minimal crash depth, is calculated. Analysis of the head collision wave formation mechanism and influencing factors is also carried out. Measures for improvement in favor of the pedestrian...
Pedestrian protection has become one of the key points of vehicle design, and the requirements of pedestrian head protection are especially difficult to fulfill. Hood lifting is a new technology which can improve the pedestrian head protection performance of vehicles by lifting up the hood before pedestrian head impact with vehicle, but most of the pop-up hoods available are irreversible, causing...
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