The A symbol is a common sign found on many cars and indicates that the vehicle has been certified as an “A-rated” car. This means that it has passed certain safety tests, including airbag testing, crashworthiness testing, seatbelt performance testing, and other standards set by the National Highway Traffic Safety Administration (NHTSA). By passing these tests successfully, manufacturers can earn an “A” rating for their vehicles. The A symbol also serves as a warning to drivers about potential dangers associated with driving such cars; because of their higher safety ratings they may be more likely to cause accidents or injuries if driven recklessly. As such, it is important for drivers to be cautious when operating an A-rated car in order to prevent any possible harm from occurring.