MoDOT will use 'sound cannons' to deter work zone speeding

Hear something funny while driving? You might be speeding through a work zone.

The Kansas City Business Journal reports the Missouri Department of Transportation has been testing acoustic devices, which can broadcast messages and pain-inducing "deterrent" tones over long distances.

As a driver passes the device, it emits a sound at volumes, "as loud as a hair dryer with your windows up or police siren with your windows down," according to MoDOT's website.

The devices are similar to those used in crowd control.

Read more from the Kansas City Business Journal.