Radar speed trailers have become a familiar sight on many roads and highways, playing a crucial role in promoting traffic safety and reducing speeding. With their eye-catching digital displays that show drivers how fast they’re going, these trailers are designed to remind drivers of the posted speed limits and encourage them to slow down.
But, have you ever wondered how these radar speed trailers work? How do they detect the speed of passing vehicles and how do they display that information on the digital sign? What about their effectiveness in reducing speed and promoting safety on the roads? And do they all have cameras to capture the license plates of speeding vehicles?
These questions and more are important to consider as we look at the use of radar speed trailers as a tool for traffic calming and speed enforcement.

How do Radar Speed Trailers Work?
Radar speed trailers are equipped with advanced radar technology that can detect the speed of passing vehicles with impressive accuracy. The radar inside the trailer emits a signal that travels through the air and reflects off the surface of the vehicle. As the signal returns to the radar, the time it took to travel to the vehicle and back is measured, to calculating the speed of the vehicle.

The radar speed trailer’s digital sign then displays the speed of the vehicle, providing drivers with real-time feedback on their driving behavior. This feedback allows drivers to assess whether they are driving too fast or too slow and adjust their driving accordingly to ensure they are following the posted speed limit. This information is particularly helpful in areas where safety is a top priority, such as school zones, residential areas, or construction zones.
The radar speed trailer’s digital sign then displays the speed of the vehicle, providing drivers with real-time feedback on their driving behavior. This feedback allows drivers to assess whether they are driving too fast or too slow and adjust their driving accordingly to ensure they are following the posted speed limit. This information is particularly helpful in areas where safety is a top priority, such as school zones, residential areas, or construction zones.Are Radar Speed Trailers Effective?
Radar speed trailers have proven to be highly effective in reducing speeding and improving road safety. Studies have consistently shown a reduction in speeding in areas where these trailers are deployed, making them a valuable tool in promoting safe driving behavior. Radar speed trailers are especially effective in areas where safety is a top priority, such as residential neighborhoods and school zones. They serve as an excellent reminder to drivers to follow the posted speed limits and drive safely.
Do Radar Speed Trailers Have Cameras?
Some radar speed trailers are equipped with cameras or license plate readers that can capture the license plate of a speeding vehicle. However, not all radar speed trailers have cameras, and those that do may not always be in use due to budget constraints or other factors. It is important for communities to carefully evaluate their needs and options when deciding on the most effective radar speed trailer for their specific situation. Additionally, it is important to ensure that any cameras are used in compliance with local laws and regulations to protect the privacy rights of drivers.
What is a Speed Sign With Radar?
Speed signs with radar are an effective solution for promoting safety on the roads and preventing speed-related crashes . The radar technology used in these signs is similar to that used in radar speed trailers, and they work by detecting the speed of passing vehicles and displaying the current speed limit for that area. Radar speed signs are designed to be highly visible to drivers, and they can be mounted on a pole, wall, or even integrated into a traffic signal or other sign. Speed signs with radar can also be programmed to flash or change color if a driver exceeds the speed limit, which serves as a visual reminder to the driver to slow down. In addition, any message board can be fitted with the same radar system as the one present in a radar speed trailer, allowing it to function as a two-in-one trailer. There is no need to purchase a separate radar trailer and separate message board.
Wanco Speed Trailers
As the nation’s most trusted resource partner for specialized traffic safety equipment, we are proud to offer the highly respected and trusted Wanco brand radar speed trailers to our customers. The Wanco Radar-Speed Trailer is renowned for its quality, reliability, and versatility, making it a valuable tool for law enforcement agencies.
All of our clients appreciate the large display board featured on this police speed radar trailer. The display board provides drivers with instant feedback on their current speed, while also allowing for customized messages like “SLOW DOWN” or “THANK YOU” to be displayed.
Another benefit of the Wanco Radar-Speed Trailer is its portability. The trailer can be easily towed to different locations, making it ideal for use in temporary speed enforcement zones or construction zones. With its solar-powered capability, it can also be used in remote areas, eliminating the need for a power source.

In addition to its effectiveness in controlling speeding, the Wanco Radar-Speed Trailer can also serve as a valuable data-gathering tool for law enforcement agencies. The radar unit records data on the speed and volume of passing vehicles, which can be used to identify trends and patterns in traffic flow. This information can be used to make informed decisions about traffic management and roadway design.
Our customers can trust the Wanco brand for their radar speed trailer needs, with their comprehensive range of speed trailers specifically designed to meet the diverse needs of different communities. As the industry’s largest rental provider of specialized traffic safety equipment and Smart Work Zone integrations, we are proud to offer this high-quality product to our customers.
The High-Tech Solution to Stop Speeding on the Roads
Say goodbye to reckless drivers and welcome to the new era of safer roads! Radar speed limit trailers are a revolutionary tool for promoting road safety and reducing speeding. By using advanced radar technology, these trailers can quickly detect the speed of passing vehicles and display it on a digital sign, encouraging drivers to slow down and follow the posted speed limit. With these high-tech solutions, communities can reduce speeding and improve overall safety on their roads.