[nottorp]

Can't emphasise that enough. Especially if you're into black clothing and have a black bike.

"This showed that for cars DRL reduces the number of daytime injury crashes by 3-12%. The effect on fatal crashes can be estimated as somewhat greater (-15%)."

https://swov.nl/system/files/publication-downloads/fs_drl_ar...

This is about cars/motorcycles and daytime, but it certainly applies to any moving vehicle at any time...

When driving, I love those bicyclists that have a blinking rear light btw. Can't overlook them.