MO HB177

Prohibits counties, cities, towns, villages, municipalities, state agencies, and other political subdivisions from using automated speed enforcement systems to enforce speeding violations within 500 feet of any speed limit reduction sign, with an exception for designated special school zones.

Defines "automated speed enforcement system" as a device using motor vehicle sensors (photographic, radar, laser, or other electrical/mechanical devices) designed to record vehicle speed and obtain images of the vehicle, operator, and license plate.

Makes evidence obtained in violation of this restriction inadmissible in any prosecution for speeding.

Modifies section 302.341 to include speed violations detected by automated speed enforcement systems when calculating if a city, town, or village receives more than 35 percent of its annual general operating revenue from traffic fines and court costs on state highways.

Classifies violations of speeding laws as a class C misdemeanor, or a class B misdemeanor if exceeding the posted speed limit by 20 miles per hour or more.