One was the growing popularity of urban trails, which led to crowing and user conflicts, especially among cyclists, walkers, in-line skaters and equestrians. 一个是城市步行道的日益流行造成拥挤和使用者间的矛盾,特别是在骑车、步行、轮滑和骑马的人之间。
In the second half of the twentieth century, as the automobile assumed almost total domination of North American cities, bicycles, pedestrians and equestrians sought escape from the noise and fumes. 二十世纪后半叶,当机动车被作为北美城市的主导交通工具,自行车、行人和骑马者寻求远离噪音和尾气的途径。