Aargau Verkehr AG (AVA) – Limmattalbahn

Motcom realized a highly available equal wave system for the Limmattalbahn with Kairos repeaters, a dispatcher control center, commissioning, and a maintenance contract including SLA.

Project Overview

CustomerAargau Verkehr AG (AVA)
IndustryPublic Transport / Rail Infrastructure
LocationLimmattal Bahn (LTB) and Bremgarten-Dietikon-Bahn (BDB), AG / ZH
ProjectNew urban rail line Limmattalbahn, approximately 13.4 km in length, operational service, stops, and depot
Service AreaOperational Radio · Continuous Wave System
Scope of ServicesConcept, radio planning, continuous wave system, repeaters, dispatcher control center, commissioning, maintenance contract including SLA

Initial Situation

With the construction of the Limmattalbahn, Aargau Verkehr AG (AVA) faced the challenge of implementing a modern, seamless radio solution for drivers, dispatchers, and security services – regardless of municipal boundaries or structural specifics along the route. Uninterrupted voice communication was required over the entire line length, as well as a central control center from which operational management could be coordinated in case of incidents.

Customer Requirements

  • Seamless, uninterrupted radio coverage over the entire route and at the stops
  • Central dispatcher control center for dispatching and incident management
  • Clear voice intelligibility even with high vehicle density and in structurally challenging sections
  • Alignment with the requirements of operational and infrastructure operators
  • Future-proof, scalable design for further expansion

Solution by Motcom

Motcom implemented a highly available continuous wave system via Kairos repeaters, enabling uninterrupted communication along the entire route. Through multiple repeater locations, the radio signal is relayed without audible handover. A central dispatcher control center consolidates dispatching, voice transmission, and alarm management. The system was specifically tailored to the requirements of operations and is designed to be future-proof.

Analysis and Measurement
Route measurement, radio coverage assessment, and prognosis calculation over the entire line length
Planning and Engineering
Location concept for repeaters and antennas, design of the continuous wave system, control center concept
Realization
Installation of the route infrastructure, setup of the dispatcher control center, commissioning and parameterization
Acceptance
Measurement drives over the entire route, acceptance protocol, documentation and handover to the operator
Operation
Maintenance contract with network management, remote monitoring, and defined response time

Customer Feedback

In operations, one thing ultimately matters: The connection must hold, regardless of where a vehicle is along the route. Motcom has implemented this continuity flawlessly for us – and it proves its reliability every day.

Michelle Badertscher, Head of Infrastructure East, Aargau Verkehr AG (AVA)

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