Driver's License Testing for Seniors

Why?
I was a victim of a car accident that left me immobilized for up to 6 months due to a senior citizen rear-ending my car. Everyday that my feet hit the floor off my bed I had pain somewhere in my body.

What?
It wasn't an ordinary day. It was the Friday before Canadian Thanksgiving and I was off to work to finish up before a week's worth of holidays. I decided to treat myself to a Starbucks latte before making my usual drive to work. I was stopped at a red light signal and was watching one of the largest 18 wheelers I had seen in a while make a left hand turn in the intersection. THEN I heard it the largest bang of all and my car started sliding. With both hands on my wheel I started steering to the right to avoid the turning truck in the intersection but the pure velocity of my vehicle would not allow my tires to respond. My seat had broke from the impact and I was struggling to hold myself up against the wheel and steer out of harms way. Out of no where a small pickup truck had rammed me from behind and ploughed my vehicle into this intersection of horror. I lay in fear as my vehicle had finally come to rest against the side and underside of the cab of the 18 wheeler. I was in shock and immediate pain was shooting through my lower back and upper body from the seat belt impact. The man from the 18 wheeler had screeched his vehicle to a stop and I could feel the vibrations of his engine through my entire body. He turned off his engine and ran around to my passenger door to see me. He asked if I was alright and I said no. He was calling for help. He told me to lay still. When paramedics arrived they tore open my door with great effort and laid me on the stretcher. Upon answering their questions, the man that had hit my car from behind had surfaced with his walker in tow. I could feel my blood start to boil and knew exactly why he had hit me. If he had trouble walking, what was he doing driving a multi-ton vehicle? He obviously had mobility issues so he would have serious troubles responding to quick action situations.

How?
During my 6 months of physical therapy to bring my body back to normal, I constantly thought of the incident. Each time it brought me to the reason why this person was permitted to drive. Laws in most provinces in Canada require drivers to renew their driver's licenses every five years without testing. No testing is required to renew a license unless there could be cause and history to warrant, and most people are not even asked any questions on renewal. When a person first receives a driver's license, they are required to undergo a hearing and visual test. It seems peculiar to me that although the body ages through our years of driving, we're not retested for these basic elements again. It is nature that the human body experiences aging and normally changes, it happens to all of us. But why are people permitted to drive without ensuring they are capable of doing so? My goal is to ensure the safety for all, but particularly the innocent, safe drivers on the roads who are victims of our society's ignorance of aging. People are not permitted to operate a motor vehicle when they are intoxicated or under the influence of other substances, so why are people permitted to operate a vehicle if they have difficulties with normal every day movements? I am calling for driver retesting for people over the age of 60 years. I believe it should be a law and mandatory requirement to have a full hearing, mobility, reflex and eye test annually for driver's 60 years of age and older. People are not permitted to live on their own at certain ages due to their mobility restraints so why are they permitted to operate a vehicle?