In general driving nowadays is very difficult, we have to pay attention to a big number of things like other drivers, walkers and bikers.
I think that the most important thing is to be very careful when we are driving, for this reason in my opinion we should make measures more effective from this point of view, for example people who drive looking at the mobile phone must be punish with an high fine and the law must be very strict against people who drive under alchool or drug effects. Also speed limits measures have to be more severe against people who drive fast maybe near schools or parks because if someone drives fast near places where he (or she) can find children is crazy and he (or she) must not drive for his (or her) entire life!
On the other hand in my opinion the minimum legal age of 18 years old is perfect. When we are 18 years old we start to be adults and we are able to drive a car ,but is important to make a very strict selection among people who want to become drivers. We have to be sure to find responsible people on the road, people who know the road rules and who care about their safety and the other people safety. For this reason i think the minumum age of 18 years old is not a problem.
in conclusion i think that the fundamental aspect is that it doesn’t care if you are 20 years old or 60 years old ,you always must be careful while you are driving because you could put your and the others life in danger.