"It was all voluntary. Nobody was made to participate or anything like that," Lawrence said. "They could just answer the little 10 survey questions and then leave, or they could answer the questions and give the mouth sample, or they could do it all."
Deputies were told they were not to make arrests, he said. If a breath sample indicated that a driver was legally intoxicated, "The organization would handle them as far as a ride home."
Lawrence said most motorists opted in, although several at the roadblock he worked bowed out.
"I had mostly traffic of folks going to and from work," he said. "We had several that would say, you know, 'I don't have time' or 'I'm on my way to work, I can't.' "
Lawrence said Bibb County had no complaints about its role in the 2007 survey. Nor did St. Clair County, said Lt. Freddie Turrentine, a sheriff's spokesman there.