The infraction or offense of speeding in a construction or work zone is committed when the driver of a motor vehicle in a marked construction/work zone exceeds the posted speed limit or exceeds the speed limit that is reasonable and prudent under the circumstances or conditions—conditions such as the road (straight, curved, wet, dry, icy, flat, hilly); the weather (clear, foggy, raining, snowing); and the visibility (smoke from a grass fire or a tractor trailer obstructing the view).

Laws vary from state to state and in many states the construction or work zone speed limit only applies when workers are present and the zone is clearly marked with signs. But drivers should be aware that the construction or work zone often extends past where barrels or other barriers have been placed on the road and the reduced speed limit continues to apply until there is a sign indicating an increased speed limit.

Laws regarding speeding in a construction or work zone (and their enforcement) vary from state to state and among cities and towns (local ordinances) and are usually located in a state’s statutes. The penalty for speeding in a construction or work zone is usually a fine and demerit points added to the driver’s license or driving record. But the fines and penalties for speeding in a construction zone are usually much greater than for a typical speeding ticket or citation—for example, fines may be doubled.

In Ohio, speeding in a construction or work zone is considered a serious offense. The state enforces what is known as a 'double fine' zone in these areas, meaning that the fines for speeding are doubled when the violation occurs in a marked construction or work zone. Ohio law stipulates that the reduced speed limits in these zones are enforceable regardless of whether workers are present, although the presence of workers often increases the penalties. The specific conditions of the road, weather, and visibility are also taken into account when determining what is considered a reasonable and prudent speed. Drivers are expected to adhere to the posted speed limits and to adjust their speed according to the conditions. The penalties for speeding in a construction zone in Ohio not only include increased fines but may also result in demerit points being added to the driver's license, which can affect insurance rates and driving privileges. It's important for drivers to be vigilant and comply with all signage in construction zones to avoid these enhanced penalties.