To address the requirements for emergency dispatch, road condition notifications and assistance requests on motorways, the solution establishes an IP-based public address and intercom system utilising the SIP protocol. This system provides comprehensive coverage across all scenarios including road sections, tunnels, toll stations and service areas. It integrates assistance terminals, public address loudspeakers and dispatch consoles to achieve unified management and control.

Core functionalities include: Emergency intercom (one-touch calling from tunnel/service area terminals, with dispatch consoles receiving visual alerts and activating surveillance); Precision broadcasting (region-specific traffic updates and alerts, supporting network-wide emergency announcements); Multi-system integration (interfacing with surveillance and traffic police systems, triggering automated broadcasts during abnormal incidents).

The solution employs a distributed deployment architecture, with terminals caching instructions locally during network outages to ensure uninterrupted service. It supports remote operations and maintenance to reduce costs, enabling emergency response times to be reduced to seconds, thereby enhancing traffic safety and operational efficiency.