"Randy Travis was charged with driving while intoxicated after the country singer crashed his car and was found naked and combative at the scene, officials said.

It was the second arrest this year for Travis, who was cited in February for public intoxication."

"Travis refused sobriety tests, Vinger said, so a blood specimen was taken. The test results are pending."

Field sobriety tests are voluntary. It is often beneficial to refuse to take the tests as they are designed in such a way that many people will fail even if they haven't consumed any alcohol or drugs.