Rules vary by state, but a number of states allow drivers to take at least the written portion of the driver's test in Spanish. Areas with high percentages of immigrants may offer the written test in other languages as well.
New Jersey offers the written driver's test in 10 languages, which allows people who don't know English as a first language to demonstrate their knowledge of driving rules. In addition, New Jersey allows people applying for a license to take a test through an interpreter who can translate the questions to the test-taker's native language. However, drivers who don't speak English fluently still need to know what basic street signs mean.