To enable drivers to distinguish between sounds, many of these devices can rate the type of sound and alert users on a multi-light panel. Some deaf drivers also use special panoramic mirrors so they can see more of what is around and behind their car. In the U.S., there are few restrictions on the deaf obtaining a license to drive. In certain states, deaf drivers may be required to have special licenses to indicate that the driver is deaf. Since 1972, television programs have been available with text for the deaf.
Television listings carry a small CC symbol for closed-captioned programs.
During special showings, movies feature open captioning, similar to subtitles, for deaf audiences. Most recent movies released on videotape include closed captioning for the deaf. Educational and self-help titles are available to borrow free from certain programs like the Captioned Media Program . Approximately 421,000 respondents claimed to be deaf in both ears, while 1,152,000 could hear speech only if it was shouted in their better ear. There are many causes for deafness and loss of hearing.