If your headlight bulb is broken replace it with this bulb from Osram. In the dark, seeing and being seen is literally vital, which is why this lamp is the best choice. Because he gives:

• Up to 110% more light on the road.
• Up to 40 m longer light beam (compared to standard halogen lamp)
• Up to 20% whiter light (compared to standard halogen lamps)
• Optimal light for increased reaction time
• Patented blue ring coating for reduced glare effect