On Thu, 6 Sep 2018 16:24:45 -0700 (PDT),
wrote:

I take that to indicate that a large number of bicyclists deaths are
the homeless or nearly homeless, drunk or nearly so, and riding
probably at night with no lights.

Or the driver of the motor vehicle was drunk or nearly so.

As for homeless/nearly homeless and/or riding at night without lights,
you are reading into the small amount of information Jute provided.
Perhaps there is more detail in the NHTSA link he provided, which I have
not yet looked at.