Right
and Left Turns
Different
risks, different realities
If
all you had to do was ride in a straight line, almost anybody
could handle a motorcycle. But in the real world we have to
negotiate turns with our bikes. While it is convenient to think
otherwise, it is simply not accurate to believe that making a
right turn is exactly the same as making a left one except for
direction. There really are different risks and realities
involved.
For
example, in all countries where we ride on the right side of the
road, right turns are sharper than left turns, while the reverse
is true in the other countries. (This article will focus on the US
road model.)
That
means that right turns are harder to negotiate than left turns at
any given speed. It also means that in addition to being harder to
negotiate, if you mismanage the turn and go wide, you will find
yourself in a lane of traffic that is running in the opposite
direction. In a left turn situation that you mismanage you will
find yourself off the road entirely.
Which
is more dangerous is largely a function of chance.
If,
for example, there are no oncoming cars when you mismanage a right
turn, at least you remain on pavement and have the chance of
recovering from going wide, but any oncoming cars present you with
a head-on collision as an alternative.
Running
off the road in a mismanaged left turn may not be worse than
taking a tumble, but it could very well involve falling off a
mountain.
While
making right turns involves greater lean angles at any particular
speed than a corresponding left turn, there is usually MORE
TRACTION available in a right turn than when turning to the left.
This, because most roads are crowned. Thus, while turning to the
right the road is cambered into the turn while turning left it is
cambered away from the turn.
Left
turns effectively provide you a narrower lane for use by your
motorcycle. That is, because you must lean a motorcycle in order
to make a turn, you cannot ride as far to the left within your
lane when making a left turn as you might like without dragging
your head or left grip across the center line and into the path of
oncoming traffic. Unless there is a retaining wall involved,
motorcycles can use their entire lane width when making right
turns.
Making
a right turn at an intersection is FAR LESS dangerous than making
a left turn at that intersection. The most obvious reason being,
of course, that you do not have to cross the path of any oncoming
traffic to do so. (As an aside, a pedestrian crossing the street
at an intersection is FAR LESS at risk if he keeps the center of
the intersection to his right rather than to his left because
immediate danger comes only from his left and less immediate
danger comes from easily visible sources.)
Turning
left has two other dangers that are not present when making right
turns: (1) The possibility that your sidestand is down and,
because most road surfaces are crowned, (2) you cannot lean a bike
as far in a left turn as you can in a right turn without dragging
some part of the motorcycle against the pavement.
One
final thought: If you make a left turn across an oncoming traffic
lane your danger is not restricted solely to that oncoming
traffic. Before you actually make your left turn you must do a
head check to the left to insure that someone is not trying to
pass you on the left! If you are struck by that passing vehicle YOU
ARE TO BLAME as you have performed an unsafe lane
change!!!!
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