Weather / Road Weather Information Systems (RWIS)

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Road Weather Information Systems (RWIS)

Campbell Scientific Canada designs, installs, and maintains industry-leading road weather information systems (RWIS) to meet the environmental monitoring challenges of our municipal, provincial, and corporate clients. Our experience implementing advanced RWIS solutions in some of the world’s most unpredictable climates, and for clients with incredibly unique challenges, has made us a true leader in the industry.

Which RWIS Solution is Right for You?

All CSC RWIS solutions are designed to be:

  • Rugged to withstand even the harshest environmental conditions.
  • Low-power offering either solar or AC power, depending on the system you select.
  • Compatible allowing for easy integration with any 3rd party hardware or software.

Whether you’re looking to build a new RWIS network, expand or densify an existing network, or are seeking cost-effective alternatives to full RWIS stations, CSC has a solution for you.


Our Mini RWIS solution provides meaningful operational data that allows you to begin monitoring and reacting to roadway conditions in a meaningful way.

Mini RWIS incorporates infrared technology to measure road surface temperatures in a non-intrusive way. It also measures air temperature, humidity and dewpoint, covering all the basic building blocks of an effective road weather solution.

Flexible Install Options
With the ability to be mounted on a quick installation pole or existing infrastructure (street lighting or existing signage) the Mini RWIS has a variety of convenient installation locations. And, being powered through solar allows Mini RWIS to be completely self-sufficient.

If your roadside real-estate is limited, but you still want high quality road weather data, Mini RWIS is the solution for you.

Ideal For:

  • Municipalities looking for to establish a cost-effective method of gathering road weather data to help improve road maintenance operations.
  • Larger jurisdictions looking to densify their road weather data network to monitor microclimates and improve highway
    maintenance operations.

RWIS Essentials

Our more robust solution, RWIS Essentials is an all-encompassing road weather solution. Comprised of road sensors, atmospheric sensors, telemetry, a remote processing unit (RPU) and various power connections, RWIS Essentials will get you accurate and reliable road weather data with the convenience of being mounted onto existing infrastructure.

Choose between the following options:


The standard RWIS option, our invasive solution involves a road pavement sensor being embedded into the asphalt to measure surface and sub-surface parameters. Parameters include:

  • Road surface condition status (wet, dry, ice covered, ect.)
  • Water film height
  • Salinity values
  • Friction values
  • Road surface temperature
  • Ice percentage
  • Road freezing temperature
  • Sub-surface temperature

The invasive solutions can run on solar or AC power.

Ideal For:

  • Collecting highly accurate road weather data in remote locations where AC power may not be readily available


Our non-invasive option utilizes a combination of optical, infrared, pyrometer and laser technologies to measure road weather data. Parameters provided by these sensors include:

  • Road surface condition status (wet, dry, ice covered, ect.)
  • Layer thickness of water, snow and ice
  • Friction values
  • Road surface temperature
  • Ice percentage
  • Freezing point temperature

These stations typically require AC power.

Ideal For:

  • Collecting highly accurate road weather data without having to block traffic flow or disturb the road surface to allow for the installation of a embedded road puck.

Overall, the RWIS Essentials options is ideal for municipalities or larger jurisdictions looking to establish or expand their road weather network in situations where roadside real estate is more available.


RWIS+ is our all-encompassing road weather solution. Typically, RWIS+ includes two invasive sensors and one non-invasive sensor. Atmospheric sensors are also included, and may consist of:

  • Wind speed & direction
  • Air temperature, relative humidity & dewpoint
  • Atmospheric pressure
  • Visibility and present weather
  • Precipitation sensors
  • Snow accumulation sensors

This system also includes a remote processing unit, telemetry, solar or AC power and an all-weather enclosure. A camera may be included for a more complete picture or road and traffic conditions. The system is also installed on a 30-foot foldable tower, which allows for measurements to be taken at ideal heights for improved accuracy.

Forecasting for Road Maintenance Efficiency
RWIS+ offers the most complete set of road weather data. Measuring local road conditions in combination with atmospheric conditions allows for the condition of the roadway to be built into forecasting models. This allows for the most accurate recommendations for road maintenance activities, resulting in the optimization of resources used.

Ideal For:

  • Establishing an RWIS network, typically in a highway setting or in areas within a municipality that have a fair amount of roadside real estate.
  • Expanding an RWIS network on a long stretch of highway.

Campbell Scientific is proud to offer a full suite of transportation solutions beyond road weather information systems. To view all of our offerings, visit our transportation page.

Transportation Solutions

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Customize a System

Most of the systems we sell are customized. Tell us what you need and we'll help you configure a system that meets your exact needs.


More Details about Our Road Weather Information Systems (RWIS) Systems

Maintenance and Calibration

Expert maintenance of your RWIS network stations is crucial to ensuring consistent, high-quality road weather data, as well as limiting downtime in the event of an unexpected hardware failure. CSC’s expert maintenance services staff offer both proactive, scheduled maintenance services, and on-demand maintenance services as you need them. Regardless of the hardware on your station - whether its from CSC or other vendors - our experts will inspect, repair, and recommend a maintenance schedule to ensure your network functions without issue.

Field Services

Don't feel like doing all the heavy lifting? CSC has over 30 years of experience installing and maintaining stations throughout the country. Allow our field service experts to handle the installation of RWIS for you. We can integrate your maintenance and calibration schedules, too, providing you with a full-service solution. 

Case Studies

The Key To Improving RWIS Network Accuracy: Density
The Ministry of Transportation Ontario (MTO) is responsible for monitoring and proactively managing the province’ more
Korea: Damage from Freezing Roads
Korea Expressway Corporation (KEC) was established in 1969 to construct and manage expressways throughout more
English Channel Tunnel IceWatch System
The Channel Tunnel (or Chunnel) connects the United Kingdom with France. It is actually more
Italy: Road Weather Modeling
To many, the name Italy is associated with sun and warm weather. This is more

FAQs for

Number of FAQs related to Road Weather Information Systems (RWIS): 1

  1. Most Campbell Scientific systems are built from individual components. This provides maximum flexibility for our customers, but it does not lend itself to pricing a "typical" system. Contact Campbell Scientific for assistance in pricing a system to meet the unique needs of the application.