Advancing measurement methods and standards for pavement texture and friction

路面的纹理、摩擦力等路面特性是影响道路设计、养护和安全运营的重要因素。路面质量影响车辆的稳定性和制动距离，也是影响碰撞类型和严重程度的一个因素。例如，在潮湿天气中，近三分之一的撞车事故都是由打滑造成的。一些飞机起降事件也受到地面条件的影响。2005年，法航358航班在多伦多皮尔逊国际机场坠毁，当时飞机在一场大雨中滑出跑道。尽管意识到表面特性对安全的影响，但许多交通部门和市政当局没有定期测量或管理摩擦或纹理，部分原因是成本、碰撞情况下的法律责任风险以及缺乏具有约束力的摩擦统一标准。

Pavement surface characteristics, such as texture and friction, are critical factors in the design, maintenance and safe operation of roads. The quality of the road surface impacts vehicle stability, braking distance, and is a factor in collision type and severity. Skidding, for example, is a contributing factor in nearly one-third of wet weather crashes. A number of aircraft landing and take-off incidents were also impacted by surface conditions. The 2005 crash of Air France flight 358 at Toronto Pearson International Airport occurred when the aircraft skidded off the runway during a heavy rain event. Despite an awareness of surface characteristics impact on safety, many transportation departments and municipalities do not routinely measure or manage friction or texture in part due to cost, risk of legal liability in the case of a collision, and lack of uniform binding standards for friction.