For the measurement and evaluation of pavement surface unevenness within the central technical register of roads, the Profilograph GE measuring device from the company Greenwood Engineering A/S from Denmark is used, including accessories and company software for data evaluation.
This device, based on the scanning of longitudinal and transverse profiles with laser sensors in combination with advanced techniques for data collection and analysis, provides detailed information about the condition of the pavement surface in terms of its evenness. The manufacturer guarantees accuracy class 1 for all components of the device.
BASIC parts:
measurement parameters
- width of the measured cross-section of the road: 2.70 m with a measuring beam width of 2.5 m
- speed during measurement: 20-110 km/h, (optimal 60 - 80 km/h)
- frequency of reading and storing data: 144 samples/100 mm at 80 km/h and a scanning frequency of 32 kHz
- accuracy of measuring the depth of ruts: 0.05 – 1mm
Obtained pavement surface characteristics:
-
longitudinal profile
- longitudinal roughness (in units of IRI, APL, PSI)
- transverse profile
- rut depth
- macrotexture (average profile depth)
- transverse pavement slope
- spatial pavement profile
- horizontal and vertical road curvature
- geographical position of route points
measurement on the road - video
TP 056 (technical regulation) – Measurement and evaluation of road roughness using the Profilograph GE device [PDF, 1.28 MB] (originally TP 04/2012, effective from 15.10.2012) establishes the procedure for measuring and evaluating longitudinal roughness using the International Roughness Index (IRI) and transverse roughness of asphalt roads using rut depth.
List of Transport Departement Technical Regulations
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Updated: 05.06.2026
Published: 1.12.2010