Introduction

Traffic signals do a lot more than guide drivers through intersections. They stand up to weather conditions from wind and ice to extreme temperatures, day after day. The backplate behind the signal head plays a critical role in visibility, but traditional designs come with a hidden cost: they dramatically increase the structural loads that stress the entire mounting system. Pelco Products set out to solve that problem, and the result is the AeroFlex flexible backplate.

The Problem with Conventional Backplates

Backplates can improve the contrast and visibility of traffic signals, and that part works great. The problem is physics. When high winds roll through, a conventional rigid backplate acts like a sail, transferring enormous stress to the signal hardware, the mounting arm, and the supporting structure. Add ice and snow accumulation to the mix, and you have a recipe for accelerated wear, hardware failures, and costly maintenance calls.

Rigid aluminum louvered backplates and standard ABS designs both suffer from the same fundamental limitation, they do not give. Under high wind loads, something has to absorb the stress, and that something is usually the attaching hardware, the signal mount, or the pole itself.

A Breakthrough in Flexible Design

The AeroFlex takes a fundamentally different approach. Engineered from exterior-grade dual durometer thermoplastics, it is chemically and mechanically bonded to be simultaneously rigid where rigidity matters and flexible where flexibility saves hardware. At lower wind speeds up to 30 MPH, the AeroFlex behaves like a conventional rigid backplate, while providing sharp visual contrast. But as winds increase, it flexes rather than fights, reducing load rather than transmitting it.

The Numbers Tell a Compelling Story:

• Virtually rigid performance up to 30 MPH
• 37% reduction in stress at 50 MPH compared to aluminum louvered and ABS backplates
• 47% reduction in stress at 75 MPH compared to aluminum louvered and ABS backplates

That kind of stress reduction at high wind speeds does not just protect the backplate. It extends the service life of the attaching hardware, the signal head itself, and the entire mounting system.

Built for the Elements

The AeroFlex is not just flexible, it is tough. The dual durometer material is compounded to handle maximum weather temperature extremes, resists snow and ice accumulation, and is fracture resistant. The material also will not fade, meaning the visual performance of your traffic signal stays consistent over the product's life.

Critically, the AeroFlex can flex in response to wind from any direction, not just head-on gusts. This omnidirectional flexibility makes it equally effective in complex urban settings, open highway installations, and coastal environments where wind direction is unpredictable.

Easy to Install, Easy to Maintain (Or Rather, Not Maintain)

One of the AeroFlex's standout practical advantages is its maintenance-free design. No adjustments, no inspections for stress fractures, no fade. It ships in kit form for easier storage, and it is compatible with most current poly and aluminum signal designs, making it a straightforward retrofit on existing infrastructure as well as a great spec for new installations.

It also accommodates both 2" and 3" reflective borders, giving traffic engineers the visibility-enhancing options they need without requiring a separate product line.

A Smarter Long-Term Investment

For municipalities and DOTs evaluating signal hardware, the total cost of ownership calculation increasingly favors products that reduce maintenance burden and extend infrastructure life. The AeroFlex, backed by Pelco Products' standard warranty and a 10-year material life rating, is designed to perform reliably through years of service in demanding conditions.

When you are specifying backplates for intersections that see severe weather events, high sustained winds, or locations where maintenance access is difficult or expensive, the AeroFlex's stress reduction benefits translate directly into reduced risk and reduced cost over the life of the installation.

Conclusion

The AeroFlex represents Pelco's commitment to solving real-world engineering challenges for traffic safety infrastructure. It is a product that makes the signal system as a whole more resilient, and that is a benefit felt not just by engineers, but by every driver who depends on that signal to work reliably, in any weather.