近年來，隨著經濟成長與都市化，交通壅塞早已成為都市區域嚴重的問題。交通號誌控制在智慧運輸系統系扮演了重要的角色，尤其對公車系統更能發擇紓解交通阻塞的問題。然而，不同於一般車輛，公車系統號誌控制必需考慮高乘客運載量、固定路線、到達時間以及間隔時間等獨特的特性，因此在設計上更具挑戰。在這篇文章中，我們將針對公車系統提出一可適性交通號誌控制方法，此方法可綜合多項資訊，以非固定的順序與時間調整號誌的時相，可在給予公車較高優先權的同時，降低對一般車輛的影響。模擬結果顯示我們所提出的方法可有效減少公車的等待時間、使公車準時的抵達、並保持規律的間隔時間。

In recent years, with the economic development and urbanization, traffic congestion has become a serious problem in urban environments. Traffic signal control plays a key role in Intelligent Transportation System (ITS). Particularly, bus system can carry a higher capacity of passengers, which help to relief traffic jam in cities. However, different from ordinary vehicles, bus system has several unique features, including higher capacity of passengers, fixed routes and specific requirements on arrival time and headway. In this paper, we propose an adaptive traffic signal control approach with bus priority, we called ATCB. It determines the phase sequence and time in non-fixed order based on synergic information to improve the performance of bus system with a very small cost to ordinary vehicles. Simulation results show that our approach can significantly reduce the waiting time of buses, keep bus schedules on time, and regular bus headway.