halogen headlamp bulbs that produce both low and high beams. We established three main criteria, upon which our assessment was based, to rank the bulbs and find the best product for 2018 ...

To see how those premium bulbs stack up against one another, we put eight of them, costing $20 to $80, through a range of tests in our labs and at our test track. We tested the low-beam ...

Because the bulbs are so bright, proper headlight adjustment is critical. There are two types: These are used for vehicles ...