I ride those kinds of lanes every week. The garmin radar still manages to pick up vehicles approaching from behind. Not the best thought out solution but better than nothing.
Bike lane w parked cars on the left.
How do you find an urban street with no trucks and no SUVs? Glad your Garmin picks up the vehicle moving near you in a sea of vehicles. Does the Garmin also advise the driver you are there when he has no possibility of seeing you?