There is an option to buy bicycle lights on their own. There are mainly 2 types:-
1. Bright white lights for the front
2.Dimmer red or orange lights for the back
These are attached to the frame and/or the handlebars of the bike and serve 2 functions; to see and to be seen. Some front lights can be mounted on top of the helmet. Nevertheless, if you don’t want to buy extra lights, then built-in helmet lights are the way to go.