Statistic Method on Traffic Volume Based on Vehicle£§s Time-domain Noise Features

A novel survey method of traffic volume was put forward and experimented using the feature extraction of vehicle£§ s time- domain noise, considering the existing problems like costly equipments for traffic flow data collection, lower efficiency in operation and obstacle of data analysis, etc. Traffic volume survey is one of the main works in traffic investigation and implementation. According to vehicle£§ noise waveform characteristics, it is shown that, the changed point can be obtained by analyzing the volume and zero cross rate in time-domain, and then the number and type of vehicles can be got. The research result states that this method is simple and economical. The statistic precision can correspond with need of the engineering. It can be used to investigate traffic volume in common highways.