About: http://webisa.webdatacommons.org/418510016

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	A beveled surface with a maximum slope of 50 percent should be added to small changes in level between 6.4 mm (0.25 in) and 13 mm (0.5 in); and Changes in level such as curbs that exceed 13 mm (0.5 in) should be ramped or removed.
http://www.w3.org/ns/prov#wasQuotedFrom	dot.gov