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Stationary brake flash:
The brake flashing action of the brake lights in either Modes 3 or 4
above is suppressed when the bike’s speed drops below 5mph. This is to
avoid nuisance flashing in heavy, stop-go traffic situations. However, in a
case in which it would be beneficial to flash the brake light (sending a friendly
message to a driver behind the bike), a 4-flash sequence can be generated in
these modes by a double pull of the front brake lever (or rear foot lever) while
the bike is stopped.
Automatic brightness:
In Modes 3 and 4 (the two brake flashing modes), the brightness
of the brake light is automatically controlled by the rate of deceleration.
Light braking always results in a minimum of 25% of the full programmed
brake light brightness. This will increase to the full programmed brightness
at a deceleration rate of 0.4G. For very vigorous braking, the intensity can
even exceed the maximum programmed value (see previous programming
discussion) for braking above 0.4G, limited only by the maximum brightness
of the brake light. As the bike comes to a stop (below a speed of 5mph), the
brake light returns to the programmed braking brightness as long as the brake
lever (or pedal) is held.
For example:
if the brake light running level is set to 20% (see how to
adjust above) and the nominal brake light brightness is set to 60%, then the
brake light will increase to 25% of this difference, i.e. to 30%, under very light
braking. As the deceleration increases, however, the brake light will increase,
reaching the full programmed brightness of 60% at 0.4G of braking. However,
under very heavy braking in an emergency situation, the brake can reach the
full 100% brightness that it is capable of at 1.0G (highest typical braking rate
based on tire traction), regardless of the maximum programmed level.
