It is now qualified as a condition that could potentially compromise driver safety, therefore a driver may have to be evaluated by an authorized ophthalmologist to determine if they can drive safely. As of May 2008, there is an ongoing campaign to remove the legal restrictions that prohibit colorblind citizens from getting drivers licenses. In June 2020, India relaxed its ban on drivers licenses for the colorblind to now only apply to those with strong CVD. While previously restricted, those who test as mild or moderate can now pass the medical requirements. Australia instituted a tiered ban on the colorblind from obtaining commercial drivers licenses in 1994. This included a ban for all protans, and a stipulation that deutans must pass the Farnsworth Lantern. The stipulation on deutans was revoked in 1997 citing a lack of available test facilities, and the ban on protans was revoked in 2003. All colorblind individuals are banned from obtaining a drivers license in China and since 2016 in Russia (2012 for dichromats). There are several features available that help the colorblind compensate for their color vision deficiency:

British Rail signals use more easily identifiable colors: the red is blood red, the amber is yellow and the green is a bluish color. The relative position of traffic lights is fixed internationally as red, amber, green from top to bottom. Horizontal lights will differ depending on the country, but right hand traffic typically follows a "red light always on the left" pattern.
They will only work on trichromats (anomalous or normal), and unlike the other types, do not have a significant effect on Dichromats. The glasses do not significantly increase ones ability on colorblind tests. Apps
Many mobile and computer applications have been developed to aid color blind individuals in completing color tasks:

Some applications can identify a color - by name or RGB code - of a color on screen or the color of an object by using the devices camera. Some applications will make images easier to interpret by the colorblind by enhancing color contrast in natural images and/or information graphics. These methods are generally called daltonization algorithms. Some applications can simulate color blindness by applying a filter to an image or screen that reduces the gamut of an image to that of a specific type of color blindness. While they dont directly help colorblind people, they allow those with normal color vision to understand how people with color blindness see the world. Their use can help improve inclusive design by allowing designers to simulate their own images to ensure they are accessible to the colorblind. Epidemiology
Color blindness affects a large number of individuals, with protans and deutans being the most common types. In individuals with Northern European ancestry, as many as 8 percent of men and 0.4 percent of women experience congenital color deficiency.