What causes road "accidents"?
The single most common cause of road accidents has been hotly
debated. The provincial government has decided that excessive
speed is the number one culprit, and has threatened to install
photo radar in an attempt to control speeds in some areas.
This, not surprisingly, has made a lot of people very upset,
with the more rabid ones complaining of the coming of a police
state. It seems to be these people's opinion that they have every
right to break the law, since they do not perceive there to be a
safety issue.
My personal view is that "speeding" is a bit of a
red herring. Excessive speed for the conditions - whether
that be slower or faster than the speed limit - is a factor in
many accidents, but there is a common driver behaviour which I
claim is more often a factor: tailgating (following too closely).
The "two second rule"
It seems almost universal that new drivers are taught to keep
at least a two second gap between their vehicle and the one they
are following. Truckers are supposed to maintain at least a four
second gap due to the longer stopping distances required.
It also seems universal that if you actually try to do that
you will have vehicles cutting in front of you all day. Some
people seem especially oblivious to the dangers of tailgating,
and/or make a sport of it.
There is a law against following too closely, but it does not
seem to me to be vigorously enforced.
Idea: video cameras as part of photo radar
Enforcing the law against following too closely might be
possible with an automated system similar to that used to enforce
laws against driving too quickly. All that is required is to have
a video camera in place of the still camera of a photo radar
installation.
The video camera would continuously record traffic passing by,
making a note of frames in which the radar shows someone
exceeding the speed limit or else passing by less than a minimum
length of time after the previous vehicle. I will leave the
technological details of the implementation unspecified, although
I believe it can all be done with existing, relatively cheap,
digital imaging technology.
Who should pay for "video radar"?
It has been estimated that enforcement of traffic regulations
and the traffic-related portions of emergency services is being
subsidised by approximately $45 million per year (GVRD
report, 1993). The installation of "video radar"
would not be cheap, and it does not seem right to me that this
cost should also be subsidised by the general taxpayer.
In my opinion, road users should be charged the cost of
enforcement of traffic laws. Whether all of the cost should be
paid by those violating the law is another (difficult) issue
which I will not address.
Note that if actually enforcing traffic laws changes people's
behaviour and results in fewer collisions, road users may in fact
pay less overall due to a reduction in the hospital and insurance
costs of traffic accidents.
Of course, the best way to decrease the number of traffic
accidents is to decrease the amount of traffic through more
pedestrian friendly environments and increased use of (an
improved!) public transit system.
James Strickland (james@perforce.com)
Feedback on the idea
"I read with interest your article on following too
closely on the Transport Action Web page. You are quite correct
that it is a problem but it would be difficult to enforce with
your video suggestion because it doesn't follow driving behaviour
for any period of time. The traffic courts that I have testified
in seem to want a pattern of disregard for a distance along the
highway rather than an inadvertent approach which your system
would not catch.
"From my point of view, the best way to deal with the
following too closely situation is to use aircraft to observe the
behaviour from above. You are able to watch more than what is
around you in your police vehicle and have a better idea of what
the driver has been doing in traffic.
Constable Tim Schewe
Royal Canadian Mounted Police
Penticton, B.C. CANADA
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