On-ramp junction is choke point of expressway, and it has import and realistic significance for building and managing expressway to study its capacity.

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。

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The capacity of ramp-way junction controls the capacity of the ramp. The methodology based on the level of service and based on the acceptable gap is introduced.

匝道连接点的通行能力与匝道本身的通行能力相比是较小的。

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