You would have a hard time memorizing a NY DMV eye chart. Each examiner has a chart on the wall behing him with many different lines of letters, all in the 20/40 size. when you get to the window your number is called for the examiner tells you the line number to read.
When I drove school bus for 15 years, they gave us all an eye test with the same paper Snellen chart that starts with E, SL and so forth. We all had it memorized. Nevertheless, when the vision in my right eye deteriorated, I gave up driving a school bus.