Radar speed signs act as a proactive measure to slow down speeding vehicles, especially in areas like school zones, residential neighborhoods, and high-risk areas where safety is a concern.

Nospeedlimit sign Australia

We are dedicated to the well-being of communities by creating robust traffic management solutions that help ensure that every journey—whether to school, work, or play—is safe and secure.

By visually displaying a driver's speed, these signs contribute to a broader campaign of raising awareness about the importance of safe driving and adhering to speed limits.

Roadsigns

A typical rechargeable NiMH AA cell has 1200-2000 mAh capacity. If your lights drain the battery completely in 3 days (72 hours), that suggests the average current draw to be at most 2000 mAh/ 72 h = 28 mA.

These signs often enjoy community support because they empower residents to address speeding concerns in their neighborhoods. They serve as a reminder to drivers to be mindful of speed limits.

If I’m right and it won’t work, does anyone have any other suggestions ? I have a bunch of these decorations and my rechargeable batteries wind up dead after about 3 days of use.

Speed signsbunnings

Our devices come equipped with data logging capabilities, allowing the collection of valuable traffic data, including speed trends and peak speeding times, to inform traffic management strategies.

SpeedlimitsignsAustralia

Radar Speed Signs—also known as driver feedback signs, speed display signs, YOUR SPEED signs, and radar speed displays—are valuable traffic calming devices that are effective in improving road safety.

Speed signsmeaning

I have a number of small Christmas decorations that are normally powered by 3 “AA” batteries. I also have a bunch of 5v USB power supplies just sitting around (various mA). So what I would like to do is power the decorations with a USB power supply. My research said that a AA battery was 1.2-1.5V @ 2000-3000mA. But given the most powerful 5v USB supply I have is only 1200mA, I’m kind of thinking this won’t work (assuming I drop the 5v to 4.5v) ? Might go on, but would be very sloooooow ?

Radar speed signs are not limited to any particular region. Their effectiveness has led to their adoption in various countries, contributing to safer roads worldwide.

Radar speed signs instantly display a driver's speed, serving as a visual reminder of their current speed compared to the posted limit. This helps drivers become more aware of their actions and encourages them to reduce speed.

The power supplies should work fine, unless the 5V could be a problem. 3xAA batteries in series provide between about 3.6V and 4.6V, depending on type.

I agree with Jim’s assessment. If you are still confused about the difference between battery capacity and current, I recommend reading this “Understanding battery capacity” blog post.