About: http://webisa.webdatacommons.org/23790941

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	As air conditioning and audio systems in vehicles proliferate, it is important to maximize the ability of warning lights for emergency vehicles to warn other vehicles of their approach, particularly at intersections.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com