SWOV, Institute for Road Safety Research, Leidschendam, The Netherlands.
Accid Anal Prev. 2010 May;42(3):944-52. doi: 10.1016/j.aap.2009.05.002.
Homogeneity of driving speeds is an important variable in determining road safety; more homogeneous driving speeds increase road safety. This study investigates the effect of introducing dynamic speed limit systems on homogeneity of driving speeds. A total of 46 subjects twice drove a route along 12 road sections in a driving simulator. The speed limit system (static-dynamic), the sophistication of the dynamic speed limit system (basic roadside, advanced roadside, and advanced in-car) and the situational condition (dangerous-non-dangerous) were varied. The homogeneity of driving speed, the rated credibility of the posted speed limit and the acceptance of the different dynamic speed limit systems were assessed. The results show that the homogeneity of individual speeds, defined as the variation in driving speed for an individual subject along a particular road section, was higher with the dynamic speed limit system than with the static speed limit system. The more sophisticated dynamic speed limit system tested within this study led to higher homogeneity than the less sophisticated systems. The acceptance of the dynamic speed limit systems used in this study was positive, they were perceived as quite useful and rather satisfactory.
驾驶速度的同质性是决定道路安全的一个重要变量；更同质的驾驶速度会提高道路安全性。本研究调查了引入动态限速系统对驾驶速度同质性的影响。共有 46 名受试者两次在驾驶模拟器中沿着 12 个路段行驶。限速系统（静态-动态）、动态限速系统的复杂程度（基本路边、高级路边和高级车内）和情境条件（危险-非危险）有所不同。评估了驾驶速度的同质性、规定限速的可信度以及不同动态限速系统的接受程度。结果表明，个体速度的同质性，即个体受试者在特定路段上的驾驶速度变化，使用动态限速系统比使用静态限速系统更高。本研究中测试的更复杂的动态限速系统导致的同质性高于较简单的系统。本研究中使用的动态限速系统的接受程度是积极的，它们被认为非常有用且相当令人满意。
