Some speed signs can also display messages to share traffic safety and other important information with the community. If a sign has messaging capabilities, custom messages can be displayed for cars driving at different speeds. For example, a car going the speed limit or under the speed limit would see a message saying “thank you!” and cars driving above the speed limit would display the message “too fast” or “slow down.” These signs are powerful tools in promoting road safety by alerting drivers of their speed and sharing important messages. The top three reasons digital speed limit signs are used is because they:
Let’s take an in-depth look at why portable radar speed signs are widely used by police departments, municipalities, homeowners’ associations, and other public and private organizations.
The main purpose of digital speed signs is to influence driver behavior and reduce speeding. Having a sign clearly visible near roads can remind drivers that they should not exceed the posted speed limit, helping them make informed decisions while driving. This is especially useful for roads that have constant speeding issues. The sign will help remind drivers to slow down, creating a safer and more comfortable environment for pedestrians and motorists.
A study conducted by Fanny Malin and Juha Luoma for the Transportation Research Part F: Traffic Psychology and Behavior showed that implementing a radar feedback sign can reduce pedestrian fatality risk by up to 22%.
Another study conducted by Elisabeth Rose and Gerald Ullman for Texas A&M University and the Texas Transportation Institute placed digital speed limit signs in multiple locations that were experiencing speeding issues. After implementing the sign, drivers reduced their speed in school zones by up to 9 mph.
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