The goal of this project is to investigate the vibration and noise characteristic and its control measures for transportation systems. The system to be investigated for the fourth year is the railway systems. The topics to be investigated are 1.According to the type of structures and trains, etc. select points for noise and vibration measurement. 2.Establish data base for noise and vibration measurements. 3.According to the results from noise and vibration measurement, determine the standard procedure for noise measurement. 4.From the measurement results, analysize the characteristics of noise and vibration for railway systems. 5.According the characteristics of measured data, propose the regulations and control measures for noise and vibration for railway systems. 6.Invite government agencies to discuss the proposed regulations on noise and vibration for railway systems. After carrying out six research topics mentioned above, following work have been accomplished. 1.Complete 30 noise and 21 vibration in-situ measurements at different location on railway systems. 2.Establish standard measurement procedure for noise and vibration for railway systems. 3.Propose regulations and control measures for noise and vibration from railway systems. 4.Establish data base of noise and vibration for railway system with different track structures and type of train, etc. 5.Propose improvement measures for noise and vibration for railway systems. 6.Consultation with relevant government agency of railway systems.

Vibration, Noise, Transportation Systems, Data Base, Abatement Measures, Control Policy