Not Ohio police officers. The Ohio Supreme Court ruled today in City of Barberton v. Mark Jenney, 2010-Ohio-2420, that if a police officer 1) is trained in estimating a vehicle's speed by eyeballing it, 2) is certified by some organization that trains police, and 3) has experience in estimating speeds, then no other evidence is needed to support a conviction for speeding. Never mind that this officer's estimate was twelve MPH off of what his radar said the car was doing. Read the decision here or review oral argument here.
But see my blog entry on H.B. 86 here.
If you are accused of a crime or have been convicted already, contact me if you can afford to hire a private criminal defense lawyer. Otherwise, contact your county or state public defender to see if they can help.
