Data File Reference

The Berkeley Highway Lab loop detector data collection and processing system operates continuously and generates several gigabytes of data each month. Raw and processed data are stored in text files, and some of the data set is stored in a database. Data is compressed in .sit format and archived on CD or DVD media.

The various data files generated by the BHL loop detector system are described below.

Raw 170 controller data is transmitted to the data collection system as a hexidecimal string via CDPD modem. The controller data packet format is described separately.

The controller configuration files -- ( Loop<station_id>.cfg ) -- map controller ports to specific loops at each station.