Speeding is still the major contributing factor towards death and serious injury on Western Australian roads despite years and years of warnings, education campaigns, speed cameras, radars and police enforcement. Inappropriate or excessive speed was a factor in nearly 30% of all road deaths in 2009. About a third of these deaths occurred on 60 km/h and 70 km/h roads and more than 60% of speeding-related crashes where someone was hospitalised happened in speed zones between 50 and 70 km/h.
The scientific evidence on how speed kills or seriously injured road users is insurmountable. For example, hitting a vehicle or object at 50 km/h is equivalent to dropping a car from a three-storey building. It is simple physics - the faster you travel the harder you hit.
Speeding gives you less time to react to emergencies. Also, when you speed it takes a greater distance to stop and other road users find it hard to gauge how fast you are travelling. The crash risk associated with speeding is extremely frightening. For example, you are twice as likely to have a serious crash travelling at 65 km/h in a 60 km/h zone. You are 4 times more likely to have a serious crash travelling at 70 km/h in a 60 km/h zone and 32 times more likely travelling at 80 km/h in a 60 km/h zone.
There are three types of speeding - low level, excessive and inappropriate:
Low-level speeding is where drivers travel five km/h above posted limits;
Excessive speeding is deliberate with drivers travelling well above posted speed limits; and
Inappropriate speeding is driving too fast for the prevailing conditions such as weather, light, traffic and road conditions.
Travel speed determines the amount of energy transferred in a crash. The human body can only absorb so much impact before death or serious injury result.
Males make up about 85% of speeding-related fatal crashes in Western Australia with young males aged between 17 and 24 comprising nearly half those deaths.
It is no myth that lower speeds save lives.
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