It is. Again, it's the same as for alcohol-impaired. The person may provide a breath sample with alcohol and then after the first sample say they're not going to do another one, at which point they'd be charged with refusal. With the drug evaluation, at any point that the subject decides they no longer want to participate, we would terminate and explain that the penalties for refusing are the same as for carrying through. But if they don't want to do it, that's fine; they'd be charged with refusing.
On June 14th, 2007. See this statement in context.