Which service does not incorporate the use of radar technology?

Procedural Service is the correct choice because it refers to air traffic control procedures that do not rely on radar technology for operations. This type of service typically involves clearances, instructions, and separation based on the established standard operating procedures and flight plans, using visual references or other means rather than radar tracking.

In contrast, Deconfliction Service, Traffic Service, and Alerting Service depend on radar to monitor aircraft positions and enhance situational awareness. Deconfliction Service utilizes radar to provide advisories that help pilots avoid potential conflicts with other aircraft by ensuring safe separations. Traffic Service leverages radar to inform pilots about nearby aircraft, enhancing their ability to maintain visual separation and situational awareness. Alerting Service also requires radar information, as it helps identify potential emergencies by alerting appropriate parties through tracking capabilities.

Thus, the reliance on procedural methods without radar is what distinctly characterizes Procedural Service, making it the correct answer in this context.