InstAlert Variable Message Sign
InstAlert Variable Message Signs
The most portable, durable, and easy-to-use traffic message boards available. See how our customers are using our message signs for their COVID-19 response.

Rapidly display custom messages wherever they are needed.
- Lightweight and portable: Weighs just 43 lbs., and is the only variable message sign on the market that folds in half to easily fit in the trunk of a vehicle.
- Quick and easy to set up: One person can deploy and take down in a couple of minutes.
- Simple, universal mounting: Mount our portable changeable message sign on a portable post, pole, trailer or vehicle hitch.
- Durably built in the USA: welded aluminum enclosure, concealed mounting hardware, shatterproof Lexan and graffiti-resistant powder-coat make InstAlert extremely rugged in any weather and built to last for over a decade. Complies with the Buy America Act and the Buy American Act.
- Flexible Power Options: Accommodates almost any power source including Lithium battery, Integrated Solar, AC or trailer.
- Extremely versatile: Display up to six screens of custom text, chevrons, and/or images.
- Share emergency alerts, traffic information, travel times, detours, parking and event locations, weather updates, pedestrian crossings and more
Access and monitor InstAlert from anywhere with TraffiCloud®:
Program your portable variable message signs from your office, home, or on the go using ATS TraffiCloud web-based software.
- Change multiple signs’ messages simultaneously: Update one or all of your portable vms sign messages in almost real time with just a few clicks from your computer, tablet or phone*.
- Smart scheduling: Schedule messages in advance for specific days and times.
- Conditional Messaging: Display different messages based on live inputs from any sensor or data source such as surface or air temperature, water levels, weather alerts, timer values, and parking availability.
- Receive Alerts: Set email or text alerts for low batteries and tampering. for all of your variable message signs*.
*requires TraffiCloud subscription.
Request More Information:
InstAlert disassembles fast
and folds in the trunk—watch how easy it is!
View and Download Spec Sheets
InstAlert Variable Message Sign
Control Interface |
TraffiCloud![]() ![]() TraffiCloud Features
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ATS Mobile![]() ![]() ATS Mobile Features
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PC![]() ![]() PC Interface Features
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On-Board![]() ![]() On-Board Controls
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Power |
Lithium (SA 18 only)
![]() ![]() Lithium Batteries
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PowerCase
![]() ![]() PowerCase PC36 / PC26
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Solar![]() ![]() Solar Panel
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AC![]() ![]() AC Power
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Trailer![]() ![]() Trailer Power
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Mounts |
Pole Bracket – SA18![]() ![]() SA18 Pole Bracket
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Pole Bracket – IA/SA 24
![]() ![]() SpeedAlert 24/InstAlert or SpeedAlert 24 |
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Portable Pole
![]() ![]() Portable Post
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Hitch Mount
![]() ![]() Hitch Mount
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Accessories |
Padded Carry Case 9SA18
![]() ![]() SpeedAlert Padded Carrying Case
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