Infrastructure and services (5 of 6)

Transport infrastructure

About 8 minutes to read in full, or 1 minute for the short version belowFacts checked 2 October 2026

In one minute

Governments, companies and investors own and run airports, seaports, toll roads and railways, and charge the airlines, shipping lines, drivers and train companies that use them.

The big idea: Transport assets cost billions to build, last for decades and often have no close rival, so what they may charge is set by a regulator or a concession contract. Profit depends on the allowed return or toll formula, on traffic, and on building on time and on budget, much more than on beating competitors day to day.

One unit, in numbers: One year of a regulated airport with 60 million passengers: GBP 2 billion comes in, and GBP 500 million (25%) is left after its own costs.What is left is the unit's contribution, before the costs of the whole company. See the worked example
Typical margin: About 55 to 85 percent EBITDA margin for airports and toll roads; about 25 percent for port groups that include logisticsRoughly how much of every 100 of sales (or income) is left as profit after the running costs. More on margin
Capital intensity: Very highVery large sums must be tied up before the business earns anything, so the cost of that money weighs heavily on profit. More on capital intensity
The number to watch: TrafficPassengers a year at an airport, containers (TEU) at a port, vehicles a day on a road.

Ask this first in a case

Who owns the asset, and under what licence, price cap or concession?

Words used above (2)

Concession:: A contract giving a company the right to build or run a public asset for a fixed time.
TEU:: Twenty-foot equivalent unit, the standard way to count containers.

The industry's other words are explained in Words to know (12).

On this page (17 sections)

How money is made

Airports charge airlines for each landing and each passenger, usually under a cap set by a regulator.
Airports also earn from shops, food, car parks, advertising and property.
Port authorities lease land and quays to terminal operators, which earn a fee for each container they lift.
Toll road owners collect tolls that rise each year with inflation or by fixed steps until the concession ends.
Railways earn fares and freight rates, track access charges, government payments and income from property near stations.
Some concessions are paid by the government for keeping the asset open and in good condition, with no traffic risk.

Worked example: one unit

Unit economics means the money in and out for one unit of the business. Start from the revenue, take away the unit's own costs, and what is left is its contribution. More on unit economics

The unit: One year of a regulated airport with 60 million passengers, under a single till (GBP million). Illustrative, rounded figures.
Line	Amountin GBP millions	ShareShare of revenue
Revenue: airline charges of GBP 20 per passenger, plus GBP 800 million from shops, parking and property	GBP 2,000	100%
Minus Operating costs: staff, security, maintenance, energy	GBP 1,100	55%
Minus Depreciation of terminals, runways and systems	GBP 400	20%
What is left (contribution)	GBP 500	25%

Check: GBP 2,000 minus GBP 1,500 of costs leaves GBP 500 (in GBP millions).

So what: The GBP 500 million left is the 5 percent return the regulator allows on a GBP 10,000 million asset base, and it must pay lenders and shareholders. If only 50 million passengers come, charge income falls by GBP 200 million, so the traffic forecast and who carries a shortfall are the levers to watch.

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Key measures(9)

Key measures (also called KPIs, key performance indicators) are the numbers people in this industry track. Ask for the first one or two early in a case.

Traffic
Passengers a year at an airport, containers (TEU) at a port, vehicles a day on a road.
Typical: Dubai International 95.2 million passengers in 2025[14]
Regulated asset base of an airport or port
The value of assets on which a regulator allows a return.
Typical: Heathrow GBP 21.3 billion at the end of 2025[3]
Allowed return (WACC)
The yearly return on the asset base the regulator allows. Glossary: Allowed return (WACC)
Typical: 3.18 percent real at Heathrow for 2022 to 2026; 8.32 percent before tax for Aena for 2027 to 2031[5]
Charge per passenger
Airline charges divided by passengers, the figure a price cap limits.
Typical: GBP 27.20 to GBP 30.50 proposed for Heathrow for 2027 to 2031, in 2024 prices[6]
Commercial revenue share
Income from shops, food, parking and property as a share of an airport's revenue.
Typical: About 31 percent at Aena in 2025[1]
EBITDA margin
Profit before interest, tax, depreciation and amortisation, as a share of revenue.
Typical: About 55 to 85 percent[7]
Concession life left
Years until the asset must be handed back to the government.
Typical: 27.3 years on average at Transurban in 2026[8]
Peak-hour utilisation
Traffic in the busiest hour against the capacity of the terminal, berth or road.
Operating ratio (railways)
Operating costs as a share of revenue; lower is better.
Typical: 59.8 percent at Union Pacific in 2025[16]

First questions to ask

When a case lands in this industry, these questions get you to the numbers that matter.

Who owns the asset, and under what licence, price cap or concession?
How are charges set and how do they rise, and how many years are left on the contract?
Who carries the traffic risk: the owner, the government or the users?
How full is the asset at the busiest hour, and what capital spending is due?
How is it financed, and when does the debt need to be refinanced?

Value chain: where the margin sits

The value chain is the steps a product or service passes through, from the first supplier to the customer. Each step below shows how much of the value it keeps. More on value chains

Step 1: Planning, land and permission: decide what gets built and who may run it
Margin varies
Governments, transport ministries, port authorities and regulators
The rules written here (price caps, concession length, who carries traffic risk) decide most of the profit later.
Step 2: Financing: lend or invest the money to build or buy the asset
Medium margin
Infrastructure funds such as Global Infrastructure Partners and Macquarie, pension and sovereign funds, banks and bond investors
Step 3: Construction: build terminals, quays, roads and tracks
Thin margin
Contractors such as VINCI, Ferrovial and Larsen and Toubro
A small overrun on a fixed-price contract can wipe out the contractor's margin.
Step 4: Owning and operating the asset under a licence, price cap or concession
Fat margin
Aena, Heathrow, VINCI Airports, Transurban, VINCI Autoroutes, PSA International, DP World, Adani Ports, Union Pacific
EBITDA margins of about 55 to 85 percent, which must pay interest and depreciation on a very large asset base.
Step 5: Commercial and property services around the traffic: shops, car parks, advertising, homes over stations
Medium margin
Airport retail operators, property arms such as MTR's in Hong Kong
Aena earned about 31 percent of its 2025 revenue from commercial activities.
Step 6: Users: carry passengers and goods through the asset
Margin varies
Airlines, shipping lines, truck and car drivers, train operators
Airlines and shipping lines often earn thinner and more cyclical margins than the assets they use.

Profit pool: who keeps the money

Where in the value chain the profit ends up, which is often not where most of the sales are. More on profit pools

Most of the profit sits with the owners of scarce assets that users cannot avoid: hub airports, deep-water ports on busy trade routes and toll roads with no free alternative. Users such as airlines and shipping lines earn thinner, more cyclical margins, and the contractors that build the assets earn thin margins with overrun risk.

Cost structure(5)

The main costs, each as a share of revenue (the money from sales).

Operating costs at an airport (staff, security, maintenance, energy): About 40 percent of revenue at Aena (EBITDA margin 59.3 percent in 2025)[1]
Operating costs at a toll road: About 15 to 30 percent of revenue (Transurban EBITDA margin 75.7 percent, VINCI Autoroutes 71.0 percent)[7]
Depreciation of the assets: A large share of revenue, often 15 to 30 percent (illustrative)
Interest on debt: A large share of revenue; Heathrow had net debt of about GBP 15.7 billion against a GBP 21.3 billion asset base at the end of 2025[3]
Capital spending (not a cost in the year, but cash out): Heathrow planned more than GBP 1.3 billion in 2026, over a third of its 2025 revenue[4]

Benchmarks(7)

Typical figures for the industry, to check a client's numbers against.

EBITDA margin, 407 ETR toll road in Toronto (2025): 84.0 percent[11]
EBITDA margin, Transurban (year to June 2026): 75.7 percent[7]
EBITDA margin, VINCI Autoroutes (2025): 71.0 percent[10]
EBITDA margin, VINCI Airports (2025): 63.4 percent[9]
EBITDA margin, Aena (2025): 59.3 percent[1]
Adjusted EBITDA margin, DP World, ports plus logistics (2025): 26.3 percent[13]
World airport revenue split (2023): USD 79 billion aeronautical and USD 54 billion non-aeronautical, of USD 146 billion in total[15]

Typical cases(6)

Case prompts you might hear in this industry.

Should an airport build a new terminal, and how should it be paid for?
How much should an infrastructure fund bid for a toll road concession?
A port terminal's profit fell while container volumes held. Why?
Should a government sell its airports or offer them as concessions?
How can an airport grow income without raising airline charges?
Should a freight railway merge with a rival, and what will the regulator ask?

Common traps(5)

Mistakes candidates make in this industry, and what to do instead.

Treating a 70 percent EBITDA margin as a sign of very high profit, when most of it pays interest and depreciation on a huge asset.
Forgetting that a concession ends and the asset goes back to the government, so its value falls to zero by the end.
Sizing capacity on average daily traffic instead of the busiest hour.
Ignoring the regulator: under a single till, growing shop income can lead to lower airline charges at the next review.
Reaching for a generic framework instead of the real driver of this industry. Instead, start from the contract or regulation, then traffic, then the capital plan.

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What changed, 2024 to 2026(7)

Recent changes a case could turn on.

Infrastructure funds grew: BlackRock completed its purchase of Global Infrastructure Partners for about USD 12.5 billion on 1 October 2024.[18]
Ardian and Saudi Arabia's PIF bought into Heathrow as Ferrovial sold out (fully by July 2025), and the UK government backed a third runway in January 2025; a national policy consultation on it ran from June to September 2026.[12]
Price reviews for 2027 to 2031: the UK regulator proposed a Heathrow cap of GBP 27.20 to GBP 30.50 per passenger, and Spain set Aena's charges to rise 0.33 percent a year with an 8.32 percent pre-tax return.[6]
CK Hutchison agreed in March 2025 to sell most of its ports at an enterprise value of about USD 22.8 billion, but the deal stalled, and Panama's Supreme Court ended its Panama Canal terminal concession in early 2026.[19]
Union Pacific agreed in July 2025 to buy Norfolk Southern at an enterprise value of USD 85 billion; the US rail regulator set a review timetable in August 2026.[17]
Passenger rail moved in opposite directions: the UK began bringing train companies into public ownership in 2025, while competition in Spain doubled high-speed passengers to 44.5 million in 2025 against 2019 and cut fares.[20]
India kept selling road income to investors: INR 58,265 crore raised through toll, operate and transfer contracts by November 2025, with more than 98 percent of tolls paid by FASTag.[21]

Players by region(8)

Well-known companies in each region. You do not need to learn them by heart; they help you picture the market.

Global: VINCI Airports and VINCI Autoroutes
Ferrovial (407 ETR, US express lanes)
Global Infrastructure Partners (BlackRock)
Macquarie
Brookfield
PSA International
Europe: Aena (Spain)
Heathrow
Abertis
Mundys
Network Rail
Renfe and rival train operators in Spain
United States: Union Pacific
BNSF
Norfolk Southern
Port Authority of New York and New Jersey
City and county airport authorities
India: Adani Airports
GMR Airports
Adani Ports and SEZ
National Highways Authority of India
Indian Railways
IRB Infrastructure
Middle East: Dubai Airports
DP World
AD Ports Group
Riyadh Metro
China: Shanghai International Port Group
China Merchants Port
COSCO Shipping Ports
MTR Corporation (Hong Kong)
Africa: Transnet (South Africa)
Lekki Deep Sea Port (Nigeria)
Nigerian Ports Authority
Latin America: OMA, ASUR and GAP (Mexican airport groups)
Panama Canal Authority

Words to know(12)

Linked words have a fuller entry in the glossary.

Regulated asset base (RAB): The value of assets a regulator recognises and allows a return on.
WACC (glossary entry): Weighted average cost of capital: the blended return lenders and shareholders require.
Single till: Airport regulation that counts shop and parking income when setting airline charges.
Dual till: Airport regulation that sets airline charges on the airport side only.
Concession: A contract giving a company the right to build or run a public asset for a fixed time.
Availability payment (glossary entry): A fixed payment from the government for keeping an asset open and in good condition.
Toll, operate and transfer (TOT): An Indian model where investors pay up front for the right to collect tolls for 15 to 30 years.
Hybrid annuity model (HAM): An Indian road model where the government pays 40 percent during construction and the rest as annuities.
Landlord port: A port where the authority owns the land and quays and private firms run the terminals.
TEU (glossary entry): Twenty-foot equivalent unit, the standard way to count containers.
Operating ratio: A railway's operating costs as a share of its revenue.
InvIT: An infrastructure investment trust in India that owns income-producing assets such as toll roads.

Business model patterns

The ways of making money this industry follows. Spot the pattern in a new industry and you already know the first questions to ask.

Sources(21)

Facts checked on 2 October 2026. Worked examples are illustrative, shaped by these sources rather than one company's figures.

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In one minute

How money is made

Worked example: one unit

Key measures(9)

First questions to ask

Value chain: where the margin sits

Step 1: Planning, land and permission: decide what gets built and who may run it

Step 2: Financing: lend or invest the money to build or buy the asset

Step 3: Construction: build terminals, quays, roads and tracks

Step 4: Owning and operating the asset under a licence, price cap or concession

Step 5: Commercial and property services around the traffic: shops, car parks, advertising, homes over stations

Step 6: Users: carry passengers and goods through the asset

Profit pool: who keeps the money

Cost structure(5)

Benchmarks(7)

Typical cases(6)

Common traps(5)

What changed, 2024 to 2026(7)

Players by region(8)

Words to know(12)

Business model patterns

Sources(21)

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