Urban public transport
Underground railways
Light rail and tram lines
Stations and depots
City railways
Extraurban public transport
Railway Lines
Railway Stations
Railway junctions
Traffic and roads
Transport plans
City Traffic Plans
Car parks and interchanges
Urban and extraurban roads
Road reorganisations
Plant engineering
Railway electric traction systems
Undergroung utilities, safety, fire prevention and smoke detection
Signalling and telecommunications

Architecture, town planning and the environment

Upgrading of urban areas

Building and special constructions

Ports and airports

Public entertainment rooms

Sports facilities and centres

Offices, public and management rooms

Environmental impact and remediation

Air treatment and cleaning

Noise and atmospheric pollution monitoring and mitigation