Roadside signs that frown at speeding drivers are being tested outside schools in Medway.
Drivers who obey the speed limit are greeted with a smiley face. The images are instantly understood by adults and children - a powerful bit of psychology, say road safety chiefs.
John Ryall spoke to Medway Council's director of regeneration Robin Cooper and Chatham head teacher Gillian Hill.
More top news
Tuesday's weather for the west of the region
Tuesday's weather for the east of the region
Tuesday morning's weather for the west of the region