The debate over mandatory road tests for elderly drivers has been sparked by a new study.

The Canada safety council reports drivers over 80 are the fastest-growing segment of the driving population, and on a per-kilometer basis, seniors are involved in a disproportionately high number of collisions.

Currently, drivers are retested when they're 80, but it's only a written and an eye sight test.

A study in the Canadian journal of psychiatry warns the number of elderly drivers in Ontario who can expect to suffer from dementia will triple to 100 thousand by 2028.

Studies also find people with dementia continue to drive for about 4 years after the onset of symptoms and are two-to-five times more likely to get into a collision.
Tracey Smith, the mother of a 13 year old girl struck and killed in a mall parking lot by an 83 year old driver, is demanding mandatory road tests. 

In April of 2000, Hannah Samuels was struck and killed by down by an 83-year-old driver in Burlington.