Notice the look of fear on my face in the picture to the right. This ride can intimidate one. Getting through it is non-trivial. The recumbent is set up with three Cateye Halogen lights. They are simple lights that run off 4 AA batteries.
Most riders have fancier systems.
However there is a clear rationale here. My lights are NOT going to fail this year. One light is mounted in the front of the bent on the main structural beam. One must stop to turn it on or off. This one gets the lithium cells.