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 Indiana, speeding in a construction or work zone is considered a serious offense. The state enforces what is known as 'Work Zone Speed Limits,' which are typically lower than the normal speed limits and are established to ensure the safety of workers and drivers in these areas. These reduced speed limits are enforceable regardless of whether workers are present, and the limits extend to the point where a sign indicates that normal speed may be resumed. Indiana law stipulates that fines for speeding in a work zone are significantly higher than for regular speeding violations. Additionally, the state may impose double fines for such infractions to deter drivers from speeding in these areas. Drivers caught speeding in a construction zone can also expect to receive demerit points on their driving record, which can affect their insurance rates and driving privileges. It is important for drivers to pay close attention to signage and adhere to posted speed limits in construction zones to avoid these increased penalties and to contribute to a safer driving environment.