In Belgium, as in Europe and large parts of the Western world, life expectancy is ever increasing. While this "aging" is made possible by very comprehensive preventive or curative health care, this certainly does not eliminate all the cognitive or motor impairments associated with aging. In addition, older people are also becoming increasingly mobile, and more specifically, they are using their own vehicle or car up to a higher age.
As people age, two risks that are often used in the context of road safety become important:
- Accident risk: the likelihood to be involved in an accident.
- Injury risk: the likelihood of injury, given an accident has occurred.
With this product, the senior selfTest, we focus on the triggers for accident risk with senior drivers.
Safe participation in traffic, in the context of an ageing population, presupposes two things: "driving skills" and "fitness to drive". Driving skills are strongly linked to learning processes, gaining experience, vehicle control and traffic insight. Fitness to drive has more to do with the physical and mental abilities of the driver: health, sensory and cognitive abilities, influence of alcohol, drugs or medication, etc.
Older road users usually have a very extensive mobility and traffic experience, and associated with that generally overall good driving skills. However, as drivers age, some of the mental and/or physical capacities needed to put those skills to good use gradually decrease. In other words, fitness to drive decreases. Examples are: reduced vision (sharpness, night blindness, etc.), poor hearing, higher reaction times, reduced muscle control or muscle strength, etc.
This decline in capacities is likely to proceed in two speeds. For most people it can be expected that this is a gradual process, which may also be partially absorbable or slowed down. Barring sudden illness and accidents, the decline in physical or mental functionality is a process of several decades. However, when looking at the oldest age categories, it can be expected that a quicker decrease in physical or mental functionality occurs as a result of (a higher likelihood of) more grave illnesses.
Although road users compensate for this natural decline in capacities to some extent (e.g. by driving less at night, driving slower, etc.), there is still a general risk that one's own skills and fitness to drive will be overestimated, or that a decline in skills and suitability will eventually go too fast. In other words, if a self-regulating compensation mechanism is used, it may not be enough to continue to drive “safely”. Different supporting measures need to be developed if we wish senior drivers to truly remain independently safely mobile.
With the SelfTest we present a product that aims at increasing awareness with senior drivers on the importance of psycho-cognitive factors and their own capacities in relation to accident risk, and therefor safe and comfortable driving.
The SelfTest, its development and use is described in the paragraph “project activities”.
The relevance towards improving road safety, compared to other actions taken to support safe driving by senior drivers, is described in the paragraph “evaluation”
