Good point, I know what you mean. I think in your case the trigger was when you saw your car, which made you think of the street light. So it’s still probably good practice.
It’s more like cheating when you constantly remind yourself of the targets I think because you don’t have that kind of continuity of awareness from sleep onset to dream and dream to dream. So if you ‘forget’ about the target and something else reminds you of it, it seems ok to me.