We cyclists
are the most vulnerable of all road users. We're up to 30 times more likely to
get injured on the road than drivers are, and up to 18 times more likely to get
killed.
They're
concerning stats, and it's up to all of us to ensure we're as visible as
possible while riding on the road. But how do we do that? Is it simply a case
of wearing brighter reflective clothing?
And what about when it comes to riding at night? CyclingTips Australian editor
Matt de Neef investigates.
Every
cyclist has a story to tell of the time a driver did not see them, leading to a
scary near-miss or worse, a crash. And if you've been riding for any length of
time, you've probably been involved in several such incidents yourself.
This
experience is not just borne out anecdotally - research suggests that the
majority of crashes involving a cyclist and motor vehicle are a case of
"looked but failed to see". That is, incidents where the driver might
well have been looking in the direction of the cyclist, but failed to recognize
that what they were seeing was a cyclist. There's a reason SMIDSY - "Sorry
mate, I did not see you" has become such a familiar acronym among
cyclists.
Several
factors can make a cyclist hard to spot, including 'visual clutter' on or
beside the roadway, the light conditions at the time and, crucially, the
conspicuity of the rider.
STAYING
VISIBLE
There have
been many studies in recent decades investigating how "visibility
aids" affect the ease with which drivers can spot cyclists on the road. In
a 2009 literature review, nine papers were found that compared the visibility
of fluorescent and non-fluorescent colors. All but one of those nine trials
found that fluorescent colors were more visible to drivers. Fluorescent
clothing in red, yellow and orange colors that contrast significantly with the
riding environment was found to be most effective1.
Another
paper, published in 2007 by researchers in New Zealand, compared the number of
time cyclists spent off work as a result of crashes involving a motor vehicle.
They found that riders who never wore fluorescent cycling kit spent eight times
as much time away from work as riders who always wore such clothing.
Studies like
these seem to point in a clear direction: riders who wear fluorescent cycling
gear are not just more visible to drivers, they're also less likely to be hit
and injured.
But this is
only part of the story because such findings are only relevant when considering
riding in daylight.
NIGHT RIDING
Whether it's
commuting to and from work in the winter months or heading out for a pre-dawn
bunch ride, most of us do at least some of our riding in the dark. And as you
might expect (or may have witnessed first-hand) riding at night is more
dangerous than during the day. Some 35% of all fatal cycling crashes happen at
night, despite the fact, only about 10% of cyclists ride after dark.
While
fluorescent clothing is effective at increasing rider visibility during the
day, it's largely useless at night.
During the
day, fluorescent clothing takes ultraviolet (UV) light from the sun - the light
we cannot see and converts it into the light we can see. The result is an increase
in the total amount of visible light that's reflected off the clothing, giving
fluoro clothing a brighter appearance. This is particularly the case in
low-light conditions, around dawn and dusk.
At night,
there's no UV sunlight to convert, so the fluorescent material is not
effective. And so for cyclists to be as visible as possible in the dark,
reflective, rather than fluorescent clothing, is required.
REFLECTIVE
CLOTHING
It's
intuitively obvious that reflective clothing makes us more visible in low-light
conditions. Rather than being absorbed by our clothing, light from car
headlights and streetlights is reflected nearby drivers, making us more visible
than we otherwise would have been.
Jackets with
reflective fabrics are the most common piece of
reflective gear used by cyclists but, perhaps surprisingly, they do not seem to
be the most effective.
In the late
2000s and early 2010s, Professor Joanne Wood from the Queensland University of
Technology leads a team of researchers focused on cyclist visibility and the
benefits of reflective clothing. In a study published in 2010, Wood and her
team tested the night-time visibility of a range of different clothing setups
used by cyclists:
a) a black
tracksuit
b) a black
tracksuit and a fluorescent yellow cycling vest with no reflective markings
c) a black
tracksuit and a jacket with reflective markings
d) a black
tracksuit, a jacket with reflective markings and reflective strips positioned
on the cyclist's ankles and knees.
The results
are striking: "Overall, drivers identified the largest number of cyclists
wearing the vest plus the ankle and knee reflectors (90% correctly recognized),
followed by the reflective vest alone (50%), the fluorescent clothing (15%) and
lastly black clothing (2%)."
These
results mirror research findings on the visibility of pedestrians at night and
can be explained by a concept known as biological motion - that is, "our
visual sensitivity to patterns of human motion".
A reflective jacket, while more
effective than simple black clothing, limits reflective material to the rider's
torso which, according to Professor Wood and her colleagues "presents much
less motion information to approaching drivers".
Reflective
strips on the knees and ankles, on the other hand, move up and down as the
cyclist moves, helping drivers to better recognize the object in front of them
as a moving cyclist, as opposed to a simple light source3.
This finding
seems to lead to an obvious recommendation for cyclists: if you want to
maximize your safety at night, do not just wear reflective clothing; ensure
that the reflective clothing includes reflective strips worn on the ankles and
knees.
But as we
know, road cyclists can be a fickle, fashion-conscious bunch.
FASHION VS
SAFETY
Researchers
have long shown that cyclists know the benefits of reflective clothing but
choose not to wear it. This might not be surprising when considering the
fashion- and performance-conscious road riding scene.
Reflective
clothing has traditionally lacked the aesthetic appeal and performance of
other, more stylish kit options, while also being associated with casual or
commuter riding. But now, with major kit brands getting on board, reflective
gear is being designed for the performance market.
The fact the
big road cycling brands have moved into the reflective clothing space is
significant.
High-visibility
jackets, for instance, have been around for years, but only recently have they
become effective as cycling jackets in their own right, keeping riders
protected from rain and the cold. Now that such clothing functions as road
cyclists expect it to - as a jacket and as a safety device - and because the
big brands are now designing reflective pieces with the fashion-conscious road
market in mind, wearing safer cycling kit has seemingly become more acceptable
than ever.
ON
REFLECTION
Some studies
suggest as little as one-third of cyclists wear reflective gear while cycling.
But in light of the recent growth of the reflective cycling kit market, it
could be time for new research to see whether more riders are now wearing such
clothing.
In the
meantime, it should be clear that there are steps we can all take to ensure
we're as easy to spot on the road as possible:
For maximum
visibility during the day, cycling kit should be as bright as possible, ideally
fluorescent.
When riding
at night, fluoro gear should be traded for clothing that's as reflective as
possible, with particular attention paid to the knees and ankles.
The use of
strong front and rear lights should be a given.
No rider
wants to be less safe on the road, but until now it's been something of a
trade-off safer clothing that does not protect from the elements and does not
look great, vs clothing that does protect from the elements and does look good
but is not as easy to see. It would seem that with recent developments in the
kit industry, riders can now have the best of both worlds.