Quality and Theory of Traffic Flow: A Symposium

analysis approach approximately assumed average average speed bottleneck bridge capacity cent Chapter close computed concentration congestion considered constant correlation cost curve density developed deviation direction distance distribution drivers effect equal expressed factor feet field Figure gasoline given gives Greenshields groups Highway increase indicate lane length less limit linear maximum mean mean speed measure method miles per hour minute normal number of vehicles observed obtained operation Parkway period plotted points probability Q-value quality index quality of flow quality of traffic queue range reasonable recorded relation relationship representing Research road runs shown shows side signal slope Space speed speed-volume standard straight line Street TABLE taken tion traffic flow traffic stream trap true tube values variables variation vehicles per hour vehicles per mile volume waves zero zone