What type of lighting does every farm tractor and every self-propelled unit of farm equipment need to have?

1. Two head lamps, two taillights, two white reflectors, hazard warning lights (flashers) - red to the front, and white to the rear
2. One head lamp, two taillights, two green reflectors, hazard warning lights (flashers) - white or amber to the front, and red or amber to the rear
3. Two head lamps, one taillight, two red reflectors, hazard warning lights (flashers) - white or amber to the front, and red or amber to the rear
4. One head lamp, two taillights, two amber reflectors, hazard warning lights (flashers) - red to the front, and white to the rear