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 second year is the highway systems. The topics to be investigated are 1.According to the type of pavement velocity, etc. select at least 20 points for noise measurement, and at least 10 points (at 2 different distances from track) for vibration measurement. 2.According to the results from noise and vibration measurement, determine the standard procedure for noise measurement. 3.From the measurement results, analysize the characteristics of noise and vibration from highway systems, and establishes the data base for noise and vibration measurement. 4.Collect literatures form Japan, U.S. Hong Kong, and Europe on the noise and vibration control measures for highway systems. 5.According the characteristics of measured data, propose the regulations and control measures for noise and vibration from highway systems. 6.Invite government agencies to discuss the proposed regulations on noise and vibration. After carrying out six research topics mentioned above, following work have been accomplished. 1.Establish standard measurement procedure for noise and vibration for highway systems. 2.Propose regulations and control measures for noise and vibration from highway systems. 3.Establish data base of noise and vibration for highway system with different traffic flow, different lane number, etc. 4.Propose improvement measures for noise and vibration for highway systems. 5.Consultation with relevant government agency of highway systems.

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