Just don't be a **** and you'll be fine. You will be much smaller than everything else on the road: cars, trucks, busses, etc. I used to ride as if I was expecting no one to see me. It was just a precaution for safe riding.
Last thing I need was some douche to hit me. I'll be dead on the side of the road and they'll be telling the police, "I didn't see him officer".