IRI roughness measurement
We measure the International Roughness Index (IRI) with a laser system and assess longitudinal pavement roughness in m/km over 20 m segments.
Objective assessment
Road pavement assessment
Road IRI measurement.
Accurate longitudinal roughness data
for pavement acceptance and maintenance planning.
Mobile laser scanningRIEGL VMX-2HA
- Flexible segments20 m assessment according to ČSN
- Traffic lanesa separate view of each lane
- Data for the Road Directorateoutput in Czech Road Database format
- From data to decisionslocation, assessment, recommendations
01 / What you get
Pavement condition.
Backed by data.
For road authorities and contractors. From acceptance of a new surface to locating sections that need attention.
Locating rough sections
Exact locations of elevated roughness, with chainage and a detailed surface elevation grid.
Know where to act
Useful deliverables
A technical report, overview charts and structured data for further processing in the Czech Road Database.
Actionable evidence
02 / Measurement results
IRI values for an actual road
Explore real measurement data, switch between traffic lanes and select a segment in the chart.
Longitudinal roughness (IRI)
Jízdní pruh 1 · average values by segmentIRI at or below 1.9 m/kmElevated roughnessReference level 1,9 m/kmClick a bar or use the ← → arrow keys.
Selected segment · ULS1020–1040m
Average IRI3,0m/km
Segment maximum3,6m/km
Classification grade2z 5Elevated roughness
Selected values from the measurement export · ULS chainage [m]
Want to know your pavement condition?
Get the same level of detail for your road.
Let us measure your roadDetailed results
Read the full technical report.
03 / How it works
You choose the road.
We provide the evidence.
IRI measurement permit on the Czech Road Directorate site
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- 01
Define the scope
We agree on the road, chainage, traffic lanes and required deliverables.
- 02
Survey the surface
Our RIEGL VMX-2HA mobile system captures the pavement surface.
- 03
Assess and deliver
You receive IRI grades, locations of rough sections and evidence for the next steps.
Let’s talk
What is the condition
of your pavement?
Send us the location, length of the road section and your target date. We will agree on the right survey scope together.