The European and ISO standards of traffic management are based on the EN and ISO standards. EN stands for European Standards or European Norms and ISO are international standards prepared by the International Standardization Organization. These standards are designed to provide guidelines for the design and implementation of traffic management systems that are safe, efficient, and cost-effective.

The EN and ISO standards provide guidance on the design and implementation of traffic management systems, and also provide minimum requirements for the installation and operation of these systems. The standards cover the design, installation, operation, and maintenance of traffic control systems and equipment, traffic signal timing and control, traffic signal systems, pedestrian crossings, and road markings.

The EN and ISO standards provide a common language and reference point for traffic management systems, helping to ensure that traffic control systems are designed and implemented to the same standards of safety and efficiency. The standards are regularly reviewed and updated to reflect advances in technology and to ensure that traffic management systems remain safe and effective.