UK explores sentiment mapping for intelligent transport system

As for sentiment mapping, this is a project that could map trouble spots by noticing drivers and passengers’ feelings expressed on social media, in the event of service flaws, breakdowns and delays. The system could know what people are thinking and feeling and also locate that information in time and place.
“Fuming in a traffic jam? Stuck on a stationary train? Standing waiting for the bus that was due 30 minutes ago? Soon you could get the chance to share your frustration,” said The Guardian.