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 New Jersey, the offense of speeding in a construction or work zone is taken very seriously due to the increased risk of harm to workers and other drivers. New Jersey law stipulates that drivers must adhere to posted speed limits in construction zones, and these limits are enforceable regardless of whether workers are present. The state imposes higher fines for speeding in these areas, often doubling the penalties compared to regular speeding violations. Additionally, the New Jersey point system applies to moving violations, including speeding in a work zone, which can result in demerit points being added to the driver's license. These points can lead to increased insurance premiums and, with the accumulation of enough points, the suspension of driving privileges. It is important for drivers to be vigilant and reduce speed in marked construction zones, not only to comply with the law but also to ensure the safety of construction workers and fellow motorists.