Driver Messaging · Dynamic Message Boards

Messages that change with every driver.

Radar message boards show each driver their speed, switch to a 'Slow Down' or a 'Thank you' depending on it, or run your own messages, and collect speed and volume data the whole time.

Radar message board showing a driver's speed and a message

Choose your size

SpeedAlert 18

The portable radar message sign for neighborhood streets and events: 18-inch speed digits or text, speed-dependent messages, and data collection even in message mode. Mounts on a post, pole, trailer or vehicle hitch in minutes.

Product sheet (PDF) →
SpeedAlert 24

The larger board, with characters up to 24 inches for higher-speed roads. Up to six modes or speed limits for six time periods a day, an optional red-and-blue violator strobe, and an internal camera for daytime awareness images (it doesn't read plates).

Product sheet (PDF) →
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Every radar message board
Modes Speed displaySpeed-dependent messagesDedicated messagesStealth (data only)
Mounting Portable postPoleTrailerVehicle hitch
Power Lithium battery (weeks of run time)Integrated solarACTrailer
Data Speed and volume, even in message modeReady-made reports
Add-ons Red-and-blue or white violator strobeAwareness cameraPadded case

Conditional messaging

Let live conditions write the message.

Feed the sign live data and the message follows it: time to destination, road or air temperature, water levels, wait times, vehicle weights or open parking spaces, from sensors on the sign or from the cloud. Change the message on one sign or all of them in under a minute.

Every Dynamic Message Boards system is cloud connected

Remote managementManage every device from the office
Instant alertsKnow when anything needs attention
Data & reportsProve the program to your board
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In the field

Need sign specifications or sample reports?

Proven on real roads

84% West Manheim Township, PA — one SpeedAlert 18, moved around the township; on the Fairview Drive S-curve, no crashes in the year it was there Read case study →
99,000 vehicles University of Nebraska at Omaha — SpeedAlert 18 trailers kept event traffic moving past pedestrian crossings Read case study →
“SpeedAlert is currently part of a traffic crash reduction plan. We're utilizing the message feature to advise motorists they are approaching a high crash area and to drive safely.”
Sgt. Matt Mackenzie · Northville Police Department

Frequently asked questions

What makes a message board dynamic?

Its message changes on its own: with each driver's speed ('Slow Down', 'Too Fast!', 'Have a Nice Day'), with the time of day, or with live data from sensors. Or it runs a dedicated message such as a flood warning or an Amber Alert.

Does it still collect data while it shows a message?

Yes. It records speed and volume in every mode, and stealth mode collects a baseline with the display off.

How long does the battery last?

Up to several weeks per charge, and the battery swaps out through its own compartment in any weather.

Can it capture license plates?

The optional awareness camera takes daytime images of high-speed drivers, congestion or tampering, but doesn't capture plates. For plate capture, see the camera-ready trailers.

Want drivers to slow down and read?

Tell us about the road, the speeds and what you want drivers to know. We'll recommend the size, the modes and where to place it.

Talk to a messaging expert →
Keep every sign talking

Service agreements put technicians on site for repairs, calibrations and firmware updates, extend warranties and leave detailed records after every visit, and every sign comes with free one-on-one training.

Explore our service plans →

Ready to make your streets safer?

A TAPCO engineer looks at your street, your budget and your timeline, and comes back with a plan.