Babies poor at perceiving rapidly changing images

It is commonly stated in road safety circles that children below the age of 7 are poor at judging speed and distance.  Here is some research published in Psychological Science.that begins to quantify the differences in visual perception between adults and in this case infants. Babies are not born with all the visual abilities they need in life. Their brains gradually develop the ability to use visual information to discover their world.

• An adult can't recognize individual moment-to-moment changes that occur faster than every 50-70 milliseconds.
• For infants, it is about half a second about 10 times slower than for adults.

http://www.bio-medicine.org/biology-news-1/Speed-limit-on-babies-vision-20345-1/

There is a tendency to require children using the public realm to conduct themselves as mini-adults.  This research rather refutes that notion.  Highway authorities may have a greater duty of care where individuals "lack capacity".