Reckless operation - a misdemeanor - doesn't have to be speeding, it just means in the officer's judgement you were operating your vehicle in a manner that shows disregard for the safety of others. It's a judgement call on the cop's part. Reckless operation is a big deal and if you didn't get cuffed and stuffed for it, count yourself lucky.

A good lawyer may get that reduced to careless operation, which is a normal moving violation.