A Simple Appraisal of Available Visibility Variation on Two-Lane Rural Roads

摘要

The continuing global mission for safer roads has led to many important ways for safety evaluation and improvement especially for two-lane rural roads. Available visibility is one element that has the combined function of speed, driver characteristics and the driving environment. Since, most fatal accidents occur at relatively high speeds, the driver's ability to accommodate and control successive variations of available visibility along the road is a very relevant safety component. This study is positioned to present the possibility of considering these variations directly, especially when the visibility values can easily be obtained. It is shown that road sections with high inconsistent visibility differentials have the highest possibility of crashes. The existing relationship between crashes and visibility along two-lane rural highways is upheld. Some technical recommendations and room for further research are proposed and advised.