Same thing here in the Bay Area. But the pass still gets read for reasons other than tolls. For example we have some signs indicating how many minutes to some location. Like "22 minutes to SFO". (Airport). They do that by reading the tags as cars go along and calculating the time. The claim is that this data is just kept anonymously but there is at least one instance I know of where in a divorce case the wife got the data and used it to prove the hubby was going somewhere else besides work. VavaVoom!