The roadside challenge
Traffic, passing vehicles and stationary buses create a demanding acoustic environment for spoken passenger information.
The retrofit solution
AD Series developed an upgrade combining enhanced speakers, an amplifier, an ambient-noise microphone and dynamic volume adjustment. The system responds to changing surrounding noise.
The reported trial results
The published test report records audible announcements at the passenger interaction point and successful operation across all four units. These measurements describe the reported trial conditions, rather than a guarantee for every site.
Supporting the next deployment
The report identifies the upgrade as suitable for wider deployment, with continuing software, firmware and hardware refinement. Customer and location details are omitted.