COLUMBUS, Ohio (AP) -- Hundreds of highway signs have had to be changed to reflect the new speed limit for trucks on many Ohio interstates.

Beginning Wednesday, semis may now go 65 mph on the state's rural and suburban interstate highways that used to have two speed limits, 55 for trucks and 65 for cars. A new law makes the top legal speed the same for both types of vehicles.

The Ohio Department of Transportation says on many of the signs, crews have been able to cover up the old truck speed limit with a reflective white material. Officials say that's faster and cheaper than putting in new signs.

Other signs were easy to fix because the old 55 mph truck limit was on a separate portion that could simply be removed. But some signs have had to be replaced completely.