I'm an FMCSA-certified DOT Medical Examiner (i.e. I do DOT physicals) and AFAIK it's still 140/90 as 68shifter explained.

The DEA is never going to relax its asinine position that THC is a Schedule 1 (no legal or medical use) drug, because they'd be putting themselves out of work. There has to be some straw man they can protect us from. Federal law trumps state. That said, I don't want anyone behind the wheel (commercial OR personal) intoxicated whether it's alcohol, drugs or just sleepy!