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WHEN IS
A TURNING MOVEMENT ILLEGAL
By: Richard L. Duquette, Esq.
Turning movements not only include the typical
90º turning movement, but also lane changes.
California Vehicle Code §22107 states:
“No person shall turn a vehicle from a
direct course or move right or left upon a
roadway until such movement can be made with
reasonable safety and then only after the giving
of an appropriate signal in the manner provided
in this chapter in the event any other vehicle
may be affected by the movement.”
Thus, any turning movement or lane change that
causes an accident may be considered illegal
because it was not made “with reasonable
safety.” Since this code section does not
state “motor vehicle,” the term “vehicle” as
used in this section includes a bicycle.

The code also requires the use of turn signals
if any other vehicle (including a bicycle) may
be affected by the turning movement. It is
good to get into the habit of signaling all of
the time, not just when alerting others of your
turning movement. One could argue that if
there are no other cars on the road, you can
turn without using any signals. But how many
times have you heard someone say, "I didn't see
the other car," just after an accident occurred?
The California Driver Handbook concurs: "Signal
even when you don't see any vehicles around you.
The vehicle you don't see might hit
you." Further, with more and more hybrid
vehicles on the road, a bicyclist may not hear
these often quiet vehicles approaching from
behind, so habitual signaling may alert a
vehicle you are unaware of. Signal as a
matter of law, of courtesy, and of
self-protection.
For bicyclists, there are two ways to
make a left turn:
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The same as a
motor vehicle: signal, move into the left
lane when safe to do so, and turn left after
yielding to any oncoming traffic.
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As a
pedestrian: Dismount and walk your
bike across when safe to cross.
Any signal of
intention to turn right or left shall be given
continuously during the last 100 feet
traveled by the vehicle before turning
(Vehicle Code §22108). After you signal your
intention, you are not automatically entitled to
make the maneuver. It's necessary to be sure
that the place you intend to go
is not already occupied.
Make sure it's clear before you move. Look
back before you pass or merge. A rear-view
mirror is a good idea, but don't rely on it
alone.
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