Question about color blindness and getting my CDL

Many signs involving hazardous materials are color coded. That could pose a problem for someone who is either partially or completely color blind.

 

AS long as you can differentiate red and green, you will be fine. Just be careful at certain intersections with flashing red lights at night. These can be confused with amber warning lights at an intersection, when in FACT they are RED lights to stop! Be safe out there.

 

The colors used in the signals are bold enough to tell what color they are even if their position was random. It's more difficult to tell with some of the more subtle shades of green or yellow.

The only signal I've run into that gives problems are old faded caution lights at intersections. They are just dark enough to make ya wonder "is that red or yellow". It takes a few seconds to be sure what color it is and if there is a stop sign you know its red.

 

mark, I have driven for 35 years, I cant see a number in any of the circles with dots. but I can see red green as separate colors. they will show you red or green at the bottom of the eye chart.

and the lights aren't all in the same position across the country, there a a very few that aren't. there is in fact one in the town where I was bornin ga, red is on the bottom and green is on the top, its on a us numbered highway.

so there is an answer from someone with the same problem as you have, let me guess on this, you have a problem with dark brown and black, you see many shades of purple as blue, you tend to wear the same color clothes so you can better match or either your wife dresses you so you don't look like a nut, your kids are constantly asking you identify colors , but you see red and green perfectly well??

 

lol, you never been color blind, you have no idea.

 

Yes they do

 

Not in Mass or NH. Maybe in your state but you can't make a blanket statement like that.