Road Safety Strategy
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Glossary

Autonomous vehicles
Automated vehicles are vehicles that include an automated driving system (ADS) (steering, acceleration and braking) with limited or no human input.
Distraction
Distracted driving refers to any activity that takes a driver’s attention away from the task of driving safely.
Drugs
THC (Cannabis), Methylamphetamine or MDMA (Ecstasy) present in saliva or blood.
Fatigue
Driving when tired. There are a range of factors that cause fatigue, the four main causes are:
  • lack of quality sleep;
  • number of hours continuously awake;
  • time of day driving when you would normally be sleeping (i.e. 1am-6am) or in the afternoon period (i.e. 2pm-4pm) when our biological time clock makes us feel tired;
  • length of time performing the task; and
  • sleeping disorders such as sleep apnoea.
Forgiving roads
Forgiving of road user errors and mistakes, ensuring that these do not lead to serious harm.
Heavy vehicle
Any vehicle over 4.5 tons. This includes the following types: rigid truck, semi-trailer, bus, b-double, mobile crane, low loader and road train.
High speed regional road
Roads in regional and remote South Australia where the speed limit is 100 km/h or 110 km/h.
Inappropriate speed
Speeds that are too fast for the conditions and are not necessarily above the speed limit.
Lives lost on our roads
A person who dies within 30 days of a crash as a result of injuries sustained in that crash.
Older road users
A person aged 70 years or above.
Road user
Everyone is a road user. Whether you drive, ride a motorbike, cycle or are a pedestrian or passenger.
Serious injury
A person who sustains injuries and is admitted to hospital for a minimum period of an overnight stay as a result of a road crash and who does not die as a result of those injuries within 30 days of the crash.
Serious injury crash
A non-fatal crash in which at least one person is seriously injured.
Shoulder
A sealed or unsealed area on the outside of the travel lanes of a road that has no kerb.
Younger road users
A person aged 16-24 years.