Making sure other road users see you is vital. A good rear light or two will make the world of difference. A light fixed to your saddle and one on your pack or helmet gives two height settings of visibility and ensures you have a reserve should one fail. Most good lights are USB rechargeable which is ideal for commuting, giving you the chance to re-charge at work for your return journey.
A light with constant and flashing modes are common with the brightness levels variable on many. Choosing a rear light with a bright, daylight setting means you’re more visible both day and night. Many are compact with quick release fittings enabling you to remove and store the lights with ease. There are even rear lights that fit in the end of your handlebars, so if you want to ensure other road users see you well in advance, make sure you fit a good rear light or two.