Surface condition and friction measurements

The measurement system helps you and your customers in the planning and quality control of winter maintenance activities on the roads and at the airports.

Our main product in the segment of winter maintenance is a mobile road weather sensor, called Road Condition Monitor RCM411, and an associated data acquisition and displaying system. The performance of RCM411 has been verified in several published third party tests and comparisons. Data acquisition is integrated in a single application, which records GPS information and communicates all the collected data to a server for displaying it in Mobile Road Condition Map™ .

Customer benefits

  • Savings in salting operations through optimization
  • Increased road safety and improved driving conditions
  • Decreased environmental impact
  • Enhanced road weather forecasts

Ask for more information about surface condition and friction measurement systems

Mobile road weather monitoring with Road Condition Monitor RCM411™

RCM411 is an optical sensor based on spectral analysis. The firmware of the sensor measures the optical reflection signals and analyses the data to produce a road surface condition and friction report.

RCM411 reports the following road surface information

  • Surface condition
  • Coefficient of friction
  • Water layer thickness

RCM411 sensor highlights

  • Easy and fast installation in any vehicle, from passenger vehicles to plough trucks, easily transferable to another vehicle
  • Low purchasing cost and economic life cycle costs of the total measurement system
  • The system is almost maintenance free: only cleaning of lenses may occasionally be needed
  • Automatic software updates and remote control of parameters
Operating principle of RCM411
RCM411 Brochures and information

Operating principle of RCM411

The sensor emits infrared light to the surface and measures the light reflection. The water and/or ice on the road surface attenuate the reflected light as compared to the calibrated values. The degree of signal attenuation depends on the amount of ice or water. Snow is seen as ice in the spectre and can be distinguished from hard ice. The measurement data analysis is executed in the microprocessor of the sensor.

RCM411 demo drive

Latest RCM411™ data on map

Browse new data measured by RCM411 on Mobile Road Condition Map™. The map also shows fresh data of some road weather stations.

Member of Aurora Network

Temperature Sensors

Surface temperature sensor RTS411/RTS411SA and Surface temperature and dew point sensor RTD411SA can be used as stand-alone units or as an integrated part of the Road condition monitoring system. The standalone versions include sensor heads and an enclosure with Bluetooth unit. A mobile device is used for user interface in the vehicle and for data transmission to selected servers. Mounting is easy on the metallic parts of the vehicle by using a magnetic fixture.

Friction Meter µTEC™

µTEC is an Android smartphone application, which is based on measurement of acceleration while braking a car so that the tires start to slip. µTEC has been certified for Quality Control measurements by the Finnish Transport Infrastructure Agency.

µTEC™ features

  • Coefficient of friction
  • Vehicle speed and direction (phone GPS)
  • Vehicle location (phone GPS)
Surface condition and friction measurements
Menu