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| GLOSSARY of Road Traffic Analysis Terms |
| [ 作者： | 来源： | 时间：2006-1-21 1:28:03 ] |
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Total Delay
Sum of delay experienced by all vehicles or pedestrians (vehicle-hours per hour or pedestrian-hours per hour). Obtained as the product of average delay per vehicle or pedestrian and the flow rate.
Traffic Delay
Delay that results when the interactions between vehicles cause drivers to reduce speed below the free-flow speed.
Total Travel Distance
Sum of distance travelled by all vehicles (vehicle-kilometres per hour or vehicle-miles per hour). Obtained as the product of travel distance per vehicle and the flow rate.
Uninterrupted Flow
A condition in which vehicles travelling in a traffic stream do not have to stop or slow down for reasons other than those caused by the presence of other vehicles in that stream.
Unopposed Turn
A left-turn or right-turn movement at a signalised intersection that is made with no opposing or conflicting vehicular or pedestrian flow allowed.
Upstream
In the direction opposite to the movement of traffic.
Walk Time
Duration of the Walk display (steady green person) for pedestrians.
Yellow Time
Duration of the yellow display for a phase or a movement.
REFERENCES
AkCELIK & ASSOCIATES (2002). aaSIDRA User Guide (for version 2). Akcelik and Associates Pty Ltd, Melbourne, Australia.
AUSTROADS (1993). Roundabouts. Guide to Traffic Engineering Practice, Part 6. Association of Australian State Road and Transport Authorities, Sydney.
AUSTROADS (2002). Traffic Signals. Guide to Traffic Engineering Practice, Part 7. Association of Australian State Road and Transport Authorities, Sydney. (Forthcoming publication).
TRB (2000). Highway Capacity Manual. Transportation Research Board, National Research Council, Washington, D.C., U.S.A. (“HCM2000”). |
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