Bike lights can be split into two categories – those that allow you to see, and those that ensure you can be seen.

 
 

If you’re only cycling on well-lit roads after dark, then smaller, low-powered lights (the sort that come with a variety of flash modes), will be sufficient. If you’ll be venturing onto dark cycle paths or rural roads, you’ll need something a little more powerful.

BikeRadar‘s James Tennant explains what to look for in each sort of light in the video below:

Video: Bike lights buyer’s guide