本文给出了不同主路服务交通量下的匝道通行能力，建立了在主路不同交通负荷下的匝道车辆可直接汇入的概率计算模型。
The ramp capacity under different traffic flow of the main ling is presented, and the merging probability model of the vehicle on the ramp under different flow volume of the main line.
入口匝道连接点是城市快速路的瓶颈，研究其通行能力对城市快速路的建设和管理具有重要现实意义。
On-ramp junction is choke point of expressway, and it has import and realistic significance for building and managing expressway to study its capacity.
结合入口匝道的特点，给出了入口匝道连接处交通流参数之间关系的理论模型以及入口匝道的通行能力计算模型。
Given are theoretical model for the relationship among traffic flow parameters of the junction at on-ramps and calculation model for the capacity of on-ramps, based on the characteristics of on-ramps.
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