Driver’s Training — I Think 15 Is Too Young

My 15 year old son is eligible for driver's training. It was just yesterday I was pushing a baby carriage, etc. We all have those "where did the time go" moments...this is one of mine. While I trust my son and think he will make a fine driver one day, I think it is too soon. He and his mother disagree. I had to wait until I was 16...and yes, I think a year matters. Especially when there are so many distracted drivers.

Is there a safe age to begin. What do you think?