Data provided consists of Basic Safety Messages (BSM) generated by the Trajectory Converter Analysis (TCA) tool with input from VISSIM calibrated simulations of the I-405 corridor in Seattle, Washington. The Seattle I-405 data environment includes data for a variety of network operational conditions, market penetrations of connected vehicles and communication strategies along the I-405 travel corridor. This legacy dataset was created before data.transportation.gov and is only currently available via the attached file(s). Please contact the dataset owner if there is a need for users to work with this data using the data.transportation.gov analysis features (online viewing, API, graphing, etc.) and the USDOT will consider modifying the dataset to fully integrate in data.transportation.gov.