About: http://webisa.webdatacommons.org/346399466

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	Adding other sources, such as other roads in the surrounding roadway network, helps fill in more information about background noise levels, but other sources may exist in the environment that TNM does not include.
http://www.w3.org/ns/prov#wasQuotedFrom	dot.gov