I haven't seen any actual results about risky behavior from from contact tracing. Here's are some second hand comments from the Miami Office of the health department:
"Director of Health Department's Miami office, Yesenia D. Villalta, says contact tracing shows exposure coming from home, healthcare, daycare, and law enforcement functions (including jails). We haven't seen these reports, but get occasional (very quick) verbal reports like this."
https://mobile.twitter.com/doug_hanks/status/1283784431300419588?cxt=HHwWgMC-3ej89dAjAAAA
What about restaurants, indoor, outdoor, beach, beauty salons, etc?