Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Shown is the vehicle position as measured by a SatNav receiver (black) and as estimated by means of statistical filtering (blue, magenta and green). (a) Shows the dataset section of a bridge underpass. (b) Shows the dataset section of a parking structure.
