#HTE
Reader Submitted: Using Weather Reactive Paint to Communicate Safety Reminders
Drivers are being urged to slow down when it’s raining after almost 3,000 people were killed or seriously injured when driving in the rain last year. England’s Highways Agency used a rain activated paint to deliver the message to drivers outside the front of motorway services when it rained.
http://www.core77.com/projects/67555/Using-Weather-Reactive-Paint-to-Communicate-Safety-Reminders