It must be impartial for every toll-roaduser whatever the toll system is.
高速公路无论采用何种收费方案，对每一道路使用者都应公平合理。
2
Interventions that target roaduser behaviour are equally important, such as setting and enforcing laws relating to key risk factors, and raising public awareness about these.
Landscape characteristic sections embody the function of visual excitement and aesthetic appreciation for roaduser, while landscape transition section make roaduser rest and relax.