This is a wall chart showing letters, all the same size, which are dark on the top line but fade out to extremely light shades of gray as you read down the chart. Each line also becomes lighter as you move to the right, so the lightest letters are at the lower righthand corner of the chart. This is the standard visual acuity test given to license applicants. Again, this is the standard test on rules of the road which is given to renewal applicants. In this test, either the silhouette of a car or the silhouette of a truck is flashed very briefly on the computer monitor.
Subjects identify which it was.
In this test, the subject sees on the computer monitor a random pattern of 14 numbers against the background of a driving scene. Using a touchscreen, the subject touches the numbers in numerical order, from 1 to 14. In another trial a different random pattern of 14 numbers is shown, but now the subject is to touch them in reverse order, from 14 down to 1. Time and errors are scored. Time and errors are scored.