We were instructed to turn on our headlights for the parade into london. I believe this may have caused some difficulty with cars that have brake & tail lights in the same reflector. The guy I followed had the single tail lamp & it was difficult to tell when he put on the brakes. Luckily for both of us, my navigater was watching close
After one "brake check" out on the four-lane, we were real careful. Suggestion, leave the headlights off.