Two Los Angeles traffic enforcement officers appeared in a porn movie in which they fondled and spanked a naked actress and let her perform a solo sex act in one of their official vehicles.

The kicker: It all happened while they were on duty.

Although Los Angeles Department of Transportation officials blasted the officer's behavior as "absolutely disgusting," they took no action against the duo -- despite being aware of the existence of the movie -- until a report on the incident by Los Angeles's NBC affiliate.

Now, as you might imagine, they plan to launch a full-investigation. Read on to see the report.

[NBC LA]