Note: this article describes a technical scenario, representative of the type of project we deliver for public transport infrastructure - it does not identify a specific client.
Intermodal stations - where rail, bus and sometimes metro services converge - have particularly demanding public address requirements: emergency messages must be intelligible in large spaces with high ambient noise and complex acoustic geometry (high ceilings, reflective materials), while complying with fire safety and evacuation standards.
The acoustic challenge
An undersized sound system for the space results in unintelligible evacuation messages - a genuine safety risk, not merely a matter of comfort. Sizing must take into account independent acoustic zoning for each area (platforms, concourse, retail area), so that an emergency message can be directed only to the affected zones without causing unnecessary panic elsewhere.
Why PRAESENSA meets the needs of this scenario
Because it runs on an IP network with distributed processing, Bosch PRAESENSA enables this zoning without multiplying centralised amplifiers, and includes automatic line testing - a regulatory requirement in busy public spaces, where the silent failure of a column loudspeaker cannot go unnoticed until the moment it is needed.
Compliance as the starting point
In public transport spaces, emergency sound design is not a comfort option - it is a regulatory requirement from day one. AVPRO works on this type of project together with the fire safety designer to ensure that the system meets the requirements applicable to the space.
If you are preparing a public address project for a transport infrastructure, talk to our technical team about the regulatory requirements that apply to your project.