Pilot 4: Circular Lifecycle Management of Lisbon Public-Transport Assets
Public-transport assets consume materials, energy and maintenance resources over long service lives. Circular decisions require reliable operational and component information across procurement, use and end of life.
The Lisbon pilot addresses the bus lifecycle through three linked value chains: sustainable vehicle production and procurement, bus service life, and end-of-life recovery. CARRIS provides the public-transport setting, with PARTICLE developing the TRACK system and technical partners contributing to vehicle, data and circularity analysis.
Operational monitoring covers 15 buses across diesel, compressed-natural-gas and electric technologies. TRACK brings together information on distance, energy consumption, greenhouse-gas-related indicators, maintenance and waste, presents it through dashboards and exports agreed data to DAMS. This connects fleet operation with the broader CSSBoost digital platform.
The end-of-life pathway examines how suitable components can be recovered from retiring buses for use in the active fleet, alongside authorised dismantling and material recycling. The work strengthens the link between component removal, the receiving vehicle and the corresponding maintenance activity. Procurement work considers durability, maintenance and recoverability as part of a wider lifecycle perspective.
The pilot has implemented an initial monitoring phase and continues to refine historical comparisons, material-flow records and component tracking. Its circularity contribution is assessed within the conditions of an operating transport service, where vehicle technology, age and duty affect the interpretation of performance.
Daily monitoring covers kilometres travelled, energy use and greenhouse-gas-related information. Monthly monitoring covers maintenance and waste. The selected fleet contains five vehicles in each of three propulsion segments: diesel, compressed natural gas and electricity.
Additional records follow recovered components and their reuse in operating vehicles. Historical and current data support comparisons, with the relevant period, vehicle characteristics and operating conditions retained. This allows operational changes to be considered separately from the specific contribution of procurement, maintenance or reuse interventions.
Public-transport assets consume materials, energy and maintenance resources over long service lives. Circular decisions require reliable operational and component information across procurement, use and end of life.
The first monitoring phase covers 15 buses across diesel, compressed-natural-gas and electric technologies. TRACK supports operational review, while procurement and recovery activities examine circular opportunities throughout the vehicle lifecycle.