What standardization established a pin configuration for traffic signal controllers?

NEMA TS-1, which stands for the National Electrical Manufacturers Association's Traffic Signal Control Equipment Specification, established the pin configuration for traffic signal controllers. This standardization is crucial because it ensures interoperability between various manufacturers' traffic signal equipment. By adhering to a common pin configuration, traffic signal controllers can more easily integrate with different types of traffic management systems and components, facilitating repairs, upgrades, and replacements without compatibility issues.

This standard helps ensure safety and efficiency in traffic management by providing a consistent framework for electrical connections within traffic signal systems. Such standardization is essential for traffic engineers and technicians who work with multiple brands and types of equipment in the field, as it minimizes confusion and error during installation and maintenance.

The other choices, while they may have their own importance in the context of traffic systems or general manufacturing standards, do not specifically relate to the pin configuration for traffic signal controllers like NEMA TS-1 does.