Two cyclists have been hit and killed in my local area of West Chester, PA. I do not know what these cyclists were wearing or the worthiness of their bike lights. I see many cyclists during the day wearing the new cool color for bikes - black. Why manufacturers make black bikes and black cycling hear is anybody's guess? The two cyclists were both biking at night. If you commute to work on a bike, take some of the money you are saving on gas and buy top quaility 400 lumen lights for the front and back of bike. If you own nothing but black cycling gear get a reflector vest at Home Depot. The type the construction guys wear.
Mount your lights and put on as much reflective gear as possible. Keep your lights well charged. Get a good rear view mirror and use it. Bike cautiously at night. Remember, NO ONE is paying attention anymore to the road. Constantly check rear view mirror for idiots behind you.
Always assume each and every car out there is aiming for you. Bike defensively at night. There is no margin for error.
Texting has changed everything for cyclists as it takes a blink of an eye for a car to swerve when involved in this activity. If the road has no shoulder, find another route. My son used to bike 30 or more into Philadelphia from the suburbs, he rode on my 4 lane highway with a huge shoulder. He had 10 feet between him and the cars. No a pleasant ride but a safe one. He now commutes in NYC and in the dark. He has 400 lumen lights and a reflective back pack. He bikes defensively.