Lights, horn, cow!
6. In several European countries, you must have your headlights on during the day at all times. That’s Bulgaria, Estonia, Finland, Sweden, Bulgaria, Denmark, Estonia, Finland, Latvia, Lithuania, Norway, Poland, Slovenia, Slovakia and the Czech Republic You might want to change to LEDs.
5. In Rhode Island, the driver must make a loud sound when passing on the left. We guess they mean honk your horn, not scream out the window.
4. Perhaps unsurprisingly, cows have right of way in India. Cows are sacred, so you might want to practice your patient face in case you come across one standing in the road.