[Eric_WVGG]

I used to consider lights “optional,” but since bicycling has grown in popularity, I have observed more lightless riders — or failed to observe, rather — and now quite agree. I’m amazed that I got away with riding effectively invisible, with no incidents, for as long as I did.

Now I’m baffled by the fact that lights aren’t built into the frames of all non-competitive road bikes…

[mcv]

They are standard on all Dutch bikes. Is that not true in other countries? Bikes without lights, rear reflectors and reflectors on the wheels or tires are far, far more dangerous than not wearing a helmet.

[panglott]

Reflectors are standard in the US, I think, but not lights.

Reflectors are in no way enough.

[mcv]

You are right, just reflectors is not enough (though tire reflectors are amazingly effective for traffic coming from the side). Lights really should be standard.