It's that time of year when more people are on the trail before or after dark. On my evening commute I see many people in dark clothes without anything reflective material. Approaching cyclists have very little warning in these situations. Many cyclists are also riding without lights. I've heard of one serious accident so far this year; two cyclists without lights who collided head-on. Luckily the injuries were not major.
Lights don't cost much and even the smallest ones at least let others know you are out there.
