https://joy.videvo.net/videvo_files/video/free/2018-11/large_watermarked/181015_06_FourLevel_04_preview.mp4 Aerial View of Four Level Interchange LA Aerial shot looking straight down at the Bill Keene Memorial Interchange in downtown LA. 1080paerialBill KeenebusycarscitycongestedcongestiondowntowndronefreewayhighwayindustrialindustryinfrastructureinterchangeintersectionjunctionLALos Angelesroadroadstradetraffictransportationtravel