How common are roadworks?

Roadworks are a common phenomenon on the Dutch road network. Roadwork activities are diverse; they concern both preventive maintenance (before damage is incurred and scheduled as routine maintenance), and necessary/reactive maintenance (after damage or incidents, and unscheduled). The frequency of roadworks is hard to determine because they are not registered centrally.

Road authorities can record their roadwork projects in the t Melvin-system of the national traffic data portal (NDW). This is the successor to the Andes LTC system, and it can be consulted online.