Every bankable road begins with a deceptively simple question: who will actually use it? Before a metre of pavement is designed, before a dollar of finance is raised, someone has to stand at the roadside and count. This is the story of how that counting becomes a corridor.
At Uhuru Infrastructure, traffic studies are the foundation stone of every project we develop — from the Kampala–Bombo Expressway in Uganda to the Kasindi–Beni–Butembo Corridor in the DRC. Here is how the discipline works, and why it matters so much in the African context.
Counting what actually moves
The raw material of a traffic study is the manual classified count: trained enumerators stationed at survey points along the corridor, recording every passing vehicle by class — motorcycles, cars, light goods vehicles, minibuses, buses of every size, and trucks from light delivery vehicles to the heaviest articulated freight.
The classification matters as much as the total. A thousand motorcycles and a thousand heavy trucks are profoundly different traffic: they occupy different amounts of road space, cause vastly different pavement wear, pay different tolls, and respond differently when a road improves. In East and Central Africa, where the motorcycle is the workhorse of passenger and goods movement alike, a study that undercounts or misclassifies two-wheeled traffic misreads the corridor entirely.
Alongside the counts run origin–destination surveys — structured roadside interviews that reveal where journeys actually begin and end, what is being carried, and why. Two roads can carry identical volumes and serve completely different economies; the OD survey tells them apart.
From today's traffic to tomorrow's
A count is a photograph. A forecast is the film. Turning one into the other requires linking traffic growth to the forces that drive it — economic growth, population, motorisation, urbanisation — and projecting each vehicle class forward across the evaluation period, testing central, high and low growth scenarios.
Then come the two effects that only appear when a road is improved:
- Diverted traffic — journeys that currently take other routes, or don't compete on time today, shifting onto the improved corridor;
- Generated traffic — entirely new journeys that exist only because the road became reliable. The farmer who never sent produce to the distant market. The bus service that never ran. The enterprise that never opened. On corridors held back by decades of poor condition — like Kasindi–Beni–Butembo — generated traffic is not a rounding error; it is part of the development case itself.
"Traffic studies are how a road proves it deserves to exist — before anyone is asked to pay for it."
How demand shapes design
The forecast is not an academic exercise; it makes concrete engineering decisions. On the Kampala–Bombo Expressway, the traffic analysis confirmed the four-lane dual-carriageway configuration will serve corridor demand — with land and structures dimensioned for the corridor's future. That single finding shapes the project's engineering: build what the traffic justifies, dimensioned for what comes next.
Demand analysis also drives interchange placement and sizing, pavement design — which is governed by cumulative heavy-axle loading over decades, not vehicle counts alone — and the location of toll plazas and weighbridges.
From vehicles to value
Finally, the traffic model feeds the economic evaluation. Every forecast journey on an improved road carries measurable savings: lower vehicle operating costs on a sound surface, time savings for passengers and freight, fewer accidents. Summed across every vehicle, every day, across the evaluation period — and weighed against the costs of construction and maintenance — these benefits are the economic case lenders scrutinise.
That is why we insist on the discipline. Optimistic assumptions are cheap at the study stage and ruinously expensive afterwards. Rigorous, conservative, evidence-based demand analysis is the difference between infrastructure that performs and infrastructure that disappoints — and it is the standard every Uhuru corridor is held to.
The Uhuru standard for demand studies
Every demand study we commission is held to the same tests before we rely on it:
- Counted, not assumed — surveys at multiple stations across every section of the corridor, covering weekday and weekend patterns;
- Classified honestly — every vehicle class measured separately, from motorcycles to articulated trucks, because each carries different economics;
- Grounded growth — forecasts linked to the economic drivers of the corridor, tested under central, high and low scenarios;
- Conservative on the upside — generated and diverted traffic included where evidence supports them, never as a way to flatter the numbers;
- Traceable — every figure in the economic model traceable back to a survey sheet.
Why lenders read the traffic chapter first
In a toll-road concession, traffic is revenue. A lender's due diligence therefore begins exactly where this article began — at the roadside count. Studies that cut corners at the counting stage surface years later as underperforming concessions and renegotiated contracts; the road sector's history is littered with them. That institutional memory is why credible, conservative demand work is not a formality in our development process. It is the foundation on which everything else — engineering, safeguards, financing — is allowed to proceed.
Where this happens next
The methods described here are exactly those applied on our current portfolio — the Kampala–Bombo Expressway in Uganda and the Kasindi–Beni–Butembo Corridor in the DRC — and they will be applied to every corridor Uhuru Infrastructure originates as our pipeline across East and Central Africa grows.
About Uhuru Infrastructure
Uhuru Infrastructure is an infrastructure development company originating, developing and delivering large-scale transport infrastructure across East and Central Africa through public-private partnership. From the Kampala–Bombo Expressway in Uganda to the Kasindi–Beni–Butembo trade corridor in the Democratic Republic of Congo, Uhuru transforms strategic routes into bankable, investment-ready assets — built to international standards, and built for the people they serve. Uhuru is the Swahili word for freedom: freedom to move, freedom to grow.
Partnership and investment enquiries: contact us or write to info@uhuruinfrastructure.africa.