Abstract: For discussing the impact of congestion pricing on travel behaviors of residents, a disaggregated modal-split model considering pricing is formulated, and based on it, the traveler’s perceived expectation utility function is built. Through a case study, the serviceability of this model is tested, and the sustainability of the impact of congestion pricing on the modal-split proportion is analyzed. In addition, we find out that the congestion pricing may have influence on both the traveler’s choice behavior and the satisfactory degree and make the modal-split proportion change. Moreover, the perceived expectation utility increases as the pricing rate increases and stands on a fixed value after reaching the maximum value; whereas traveler’s satisfactory degree value is negative, it decreases in different velocities for various perception degrees.

Key words: transportation engineering, traffic modal-split, disaggregate model, traffic congestion pricing, utility function

摘要： 为了探讨拥挤收费对城市居民出行行为的影响，提出了考虑收费的非集计交通方式分担模型，推导了乘客的理解期望收费效用。根据实例测试证明了模型的可用性，进行了收费费率对交通方式分担结构影响的敏感度分析。结果表明，城市交通拥挤收费将影响出行者的交通方式选择行为和满意度，造成城市交通方式分担结构的变化；理解期望效用随收费费率的增加而增大，达到某一值后保持不变，而出行者对拥挤收费的满意度均为负值，并随着出行者对收费认知的不同而以不同的速度减小。

关键词: 交通运输工程, 交通方式分担, 非集计模型, 拥挤收费, 期望效用