Research Article

Overtaking Safety Evaluation and Setting of Auxiliary Lane on Two-Lane Highway in China

Table 5

Traffic volumes of opposing lane that need setting auxiliary lane (unit: veh/h/ln).

Traffic conflict degreeDesign speed (km/h)
80604030

Minor 288~398273~370248~326227~290
General 398~495370~454326~388290~339
Serious >495>454>388>339