FST is to prove impairment...... Blowing is to prove drunk..... You can be under the LEGAL limit but still get a driving under the influence........ You could pass all the FST's but blow over .08 and get a drunk driving... There are 2 different charges....I was joking. I passed the breathalizer too so he only gave me a speeding ticket. It wasted about 30 minutes and I was pissed because when he told me I was free to go I asked him if I passed all his little tricks and he said yes so I asked him why he gave me the breathalizer. He said they make everyone do it so I told him we could have saved alot of time if he hadn't made me do all the monkey tricks. I think I pissed him off at that point.