Global Cities Development

Sectors

Transport & mobility

Why transport rarely belongs in one company: how roads, rail and public transport are each held in a company of its own at the sector-delivery layer, how corridors are reserved before the demand exists, and who owns each interface with the port, the airport and the grid.

Overview

A city’s transport network is settled long before it is built. Corridors, reserves and the hierarchy of streets are fixed in the master plan, and once land around them has been committed, a corridor that was not reserved becomes expensive or impossible to recover. Work on transport therefore begins with the reservation and the standard, not with the appointment of a contractor.

Transport rarely belongs in a single company. Modes differ in how long they take to build, how they are paid for and who carries the risk if demand arrives later than forecast. Holding each in its own vehicle at layer 4 allows each to be financed and governed on its own terms, and keeps a shortfall in one mode from being absorbed quietly by another. It also gives government one accountable counterparty per asset rather than a single opaque transport company.

Transport is where the boundaries between sectors are most visible: port access roads, the airport link, grid capacity for electrified fleets, and the digital systems behind signalling and ticketing. In a layered structure each of those interfaces has a named owner and a defined obligation, set out in the development framework instead of negotiated after construction has started.

Schematic

The parts and how they connect

Schematic of a mobility network: trunk corridor, rail corridor, interchange and last milePlan-style schematic. A dual trunk corridor runs across the north and a rail corridor with sleepers across the south. An interchange between them sits at the centre, with ramps and a dashed walking catchment around it. A fine grid of district streets fills the south-west, reached by the feeder route from the interchange.PLATE 06 / 10SCHEMATIC · NOT TO SCALE0102030405Schematic of a mobility network: trunk corridor, rail corridor, interchange and last milePlan-style schematic. A dual trunk corridor runs across the north and a rail corridor with sleepers across the south. An interchange between them sits at the centre, with ramps and a dashed walking catchment around it. A fine grid of district streets fills the south-west, reached by the feeder route from the interchange.PLATE 06 / 10SCHEMATIC · NOT TO SCALE0102030405Schematic of a mobility network: trunk corridor, rail corridor, interchange and last milePlan-style schematic. A dual trunk corridor runs across the north and a rail corridor with sleepers across the south. An interchange between them sits at the centre, with ramps and a dashed walking catchment around it. A fine grid of district streets fills the south-west, reached by the feeder route from the interchange.PLATE 06 / 10NOT TO SCALE0102030405
  • 01Trunk road corridor
  • 02Rail corridor
  • 03Interchange between road and rail
  • 04District streets
  • 05Walking catchment around the interchange
  • Trunk corridor through the interchange to the last mile
Illustrative. Schematic of a mobility network: trunk corridor, rail corridor, interchange and last mile. Not a site plan or a design, and not a depiction of any existing or planned facility.

What this covers

Scope of work in transport & mobility

In the structure

How the sector is held

Transport is delivered at layer 4, normally through more than one special-purpose company: a toll road, a freight rail link and an urban bus system carry different obligations and are better held apart than combined. Corridor alignments, reservations and development standards come from the master developer at layer 3, which also holds the single interface with government on road and rail reserves. Signalling, traffic management and fare collection sit in the crosscutting digital layer, so that each vehicle connects to one set of systems instead of building its own.

The layers of building a city

Partners and capital

How partners and capital enter

Construction and operating partners contract at the level of the individual vehicle, under concession, availability or service agreements whose terms are settled before procurement opens. Development finance institutions and institutional investors assess each mode separately, because the basis on which it earns is different: a road with user charges, a bus network paid for availability and a rail link tied to freight volumes are not the same proposition. Where a mode cannot be supported by user charges, the structure states the public contribution and its source explicitly rather than concealing it inside a larger entity.

Crosscutting

Sustainability and resilience in transport & mobility

Sustainability in transport is decided by the plan before it is decided by the vehicle fleet. Right-of-way for mass transit, walking and cycling is reserved while land is still uncommitted, and the modal hierarchy is written into the development standards. Depots and interchanges are designed for electrified fleets and the grid capacity they need; alignments are tested against flood, heat and the drainage pattern of the site. Land acquisition, resettlement and community impact are handled to the environmental and social standards applied by development finance institutions.

Related

All ten sectors