Road Weather Information Systems

Wet or icy road surfaces can be dangerous and costly to manage. Our single-solution road weather information systems (RWIS) provide real-time data that helps you make the right decision, every time.

Smart solutions for road weather

Experts in safety

Our team helps design and implement the perfect road weather solution to meet your needs.

NTCIP-compliant sensors

Make sure your equipment meets industry standards.

Start now. Grow later.

Start with a simple flood sensor then add high-resolution sensors as you see results.

How we can help

Icy Road Warning System with flashing beacon

Specific Sensors for Specific Roads

Tailored to your needs

Every road reacts differently to precipitation and low temperatures. We design the set of monitoring tools that tracks the most important factors on your roads. Best of all, you can start with a single installation, then grow your network over time.

high water detection systems

Improved safety for flooded roadways

Alert drivers or choose to close roads when adverse weather is on its way. When you have the right data, these choices become clear – saving you money on costly rescue operations and road maintenance.

expand when you are ready

Plan budgets with clarity

With a single solution, we help you develop a robust road weather system over several years – starting with the basics then gradually adding detail. Perfect for teams that need to adhere to strict budgets over time.

Related Products & Services

At AEM, we design complete systems, from sensors to data loggers to software, that deliver mission critical data to make the best decision possible. From winter weather conditions to flooded roadways, our road weather product line offers the most complete solution for agencies of all sizes.

Road Weather Information Systems: FAQs

Road weather information systems help decrease the risk of accidents by alerting emergency management personnel and motorists in real-time when hazardous conditions exist.

Road weather information systems typically measure three types of road weather information: pavement-level data, atmospheric data, and water level data.Pavement-level data can include surface temperature, subsurface temperature, road condition (dry, damp, wet, snow, ice), and friction coefficient (good, fair, or poor grip). It is important to consider current weather conditions when determining road safety, which is why the best road weather systems incorporate atmospheric data such as air temperature, relative humidity, wind, and precipitation information, among others. Present weather conditions such as limited visibility due to fog, rain, snow, and freezing precipitation are also measured.

The data that comes from a typical road weather system includes all the information needed to assess the conditions of a roadway including:

  • Air Temperature
  • Relative Humidity
  • Wind Speed
  • Wind Direction
  • Precipitation Type
  • Precipitation Amount
  • Precipitation Rate
  • Precipitation Start/End Time
  • Visibility
  • Barometric Pressure
  • Pavement Measurements
  • Surface Temperature
  • Surface Condition
  • Surface Friction/Grip
  • Subsurface Temperature
  • Water Level

RWIS are deployed anywhere road surface conditions are important, including:

  • Bridges and overpasses
  • Freeway exit and entrance ramps
  • Elevated roads
  • Highways and surface streets
  • Curved and shaded areas of a road
  • Risk zones in open plains and on exposed highways
  • Airport and runway surfaces

There are many benefits to an RWIS system:

  • Know what is happening along your roadways in all conditions. Road Weather Information Systems (RWIS) provide scientific grade measurements so you can be assured of their accuracy.
  • Maximize your Return on Investment (ROI) by utilizing road weather information to make decisions that help protect lives and property and efficiently maintain roadways.
  • Reduce accidents by providing feedback to the traveling public using weather-responsive traffic management. Flash warning beacons when there are high winds, activate a roadside message sign when the roads are icy or send text alerts when there is fog.

Customer Stories

HWDS webinar image


How to Protect Drivers from Flooded Roadways with Automation and Technology

This webinar explores the use of High Water Detection Systems where real-time monitoring at the flood-prone point in the road can automatically activate flashing beacons and gates to warn motorists of danger ahead. In this webinar you will learn:

  • Where and why flooded roadway detection systems are needed
  • What is a High Water Detection System (HWDS) and how it works
  • What are the essential features and technology of an effective HWDS
  • How Bexar County, Texas, automates detection to protect drivers on flooded roadways, and informs the community of real-time conditions
Watch Now


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