Whether to use a steady light on your bicycle or a flashing one is a common question for bicycle users.
A steady light can
be seen by drivers and pedestrian, but is it really as noticeable as a
flashing light? Some people may find the flashing light a little
annoying, but will the single light blend you into a sea of lights.
The answer is: as annoying as it might be, the flashing light
will attract the most attention on a busy city street. European
countries are trying to install flashing brake light on the back of cars
when the vehicle needs to stop quickly while driving 30 mph or more.
This will attract attention to the cars behind it letting them know
there is a short stop coming and danger may occur. Research shows
that the flashing brake lights allow the driver in back to react and
begin pressing his brake pedal 0.2 seconds faster -- that's about one
car length at 55 mph -- and perhaps soon enough to prevent a rear-end
collision. This proves that the flashing light will attract people’s
attention a lot quicker than the steady light.
if you are riding down a quiet street then the flashing light might not
be necessary since there are not a lot of distractions.
All in all, if you ride on busy streets the flashing light is your best bet.