本研究調查台南市東門地下道之噪音響度與機車流量之關係，機車流量為40~50輛/分時，噪音響度為：隧道內88(81~95) dB(A)，西端分岔路口82(77~88) dB(A)。隧道內噪音響度與機車流量之關係可用廻歸方程式㏒(噪音響度)＝ a × (機車流量)＋b (p<0.01)表示之。 The sound level and its correlation with traffic flow at the Tung-Men Subway in Tainan was investigated. The sound level for the traffic flow of 40-50 vehicle/min was determined as follows:88 ( 81-95 ) dB(A)for the tunnel part, 82 ( 77-88 ) dB(A) for the by-pass. The correlation between the sound level and the traffic flow for the tunnel part could be expressed as log ( sound level ) = a ( traffic flow ) +b (p<0.01 ).
