Road safety risk
See riskbefore crashes happen.
We assess road safety risk with iRAP, the world's most widely used programme for rating the safety of road infrastructure, and CycleRAP, its extension for cycling.
Why iRAP
The global standard for safer roads.
The International Road Assessment Programme (iRAP) is a registered charity with UN consultative status. It gives road authorities one common, evidence-based way to measure road safety, applied to the same standard all over the world.
Roads receive a Star Rating from 1 star (highest risk) to 5 stars (lowest), based on the design features known to influence crashes. On average, each extra star halves crash costs. Investment plans then show which upgrades save the most lives for the money. So far, the work of iRAP partners has supported US$121 billion of infrastructure investment.
Two of the UN global road safety targets use the 3-star-or-better benchmark, for all new roads and for more than 75% of travel by 2030. So results connect directly to national and international commitments.
Source: iRAP impact metrics, 2026.
CycleRAP
Built for cycling.
CycleRAP extends iRAP to cycling and other light mobility. Launched in 2022, it is the first globally applicable model of its kind. It rates risk on any type of facility, from cycle tracks and painted lanes to shared streets and off-road paths. It covers crashes with motor vehicles, with other cyclists and pedestrians, and crashes where no one else is involved. That matters: 60 to 90% of cycling and light mobility crashes that end in hospital involve no motor vehicle.
It identifies high-risk locations without waiting for crashes to happen, and shows which improvements reduce risk most.
Our experience
There from the start.
Stroomlens founder Roxy Tacq co-built the beta version of the CycleRAP model and guided the first projects that applied it across the Netherlands.
She is a member of the CycleRAP Advisory Group and a CycleRAP quality assurance supplier.
What we offer
Deeper and broader than a standard assessment.
Partner
Working with Lane Patrol.
We often work with Lane Patrol, a licensed CycleRAP supplier. Their platform uses a bike-mounted app and AI computer vision to assess more than 40 infrastructure features.
Lane Patrol has assessed close to 800 km of cycling infrastructure in 47 cities across 15 countries, from Barcelona to Dublin. We have delivered several projects together.
The right tool for the job
One point of contact.
We use the Lane Patrol platform where it fits best, and other methods where they work better. Either way, you get one point of contact and an analysis that goes beyond the standard assessment.
Stronger together
Combine the lenses.
Risk scores become more powerful when combined with the other lenses.
Walking & cycling volumes
Use DQ Flows volumes to scope iRAP and CycleRAP projects, as input data the model needs, and to map collective risk: where the most people face the highest risk.
Explore →Green & liveable streets
A high-risk street needs change, but there is not enough space for every function? ‘The Good Street’ gives a clear framework for the trade-offs, leading to a safe design that works in this place and in the whole network.
Explore →Road user experience
Compare measured risk with how safe people feel, and see where the two match or differ.
Explore →Share your question.
Tell us about your area and the questions you are working on. No obligation. We will come back to you with ideas and a tailored proposal.
Email roxy [at] stroomlens [dot] com · Cascais, Portugal