Abstract
Although the fundamental traffic diagram provides the characteristics of a typical road traffic speed-flow relationship, little consideration has been given to the impact of adverse weather conditions on the relationship and the subsequent impact on local speed-flow. For the first time, this study uses precipitation radar along with a state-of-the art traffic information system to ascertain the relationship between speed-flow and precipitation on a UK transport corridor at the local (junction to junction) scale. It is evident that precipitation causes a significant reduction in speed and maximum flow on many links of the corridor as well as a downward reduction in the overall speed-flow relationship. With increased instances of heavy precipitation predicted in the UK as a result of climate change, these findings highlight the subsequent impact on journey travel times and associated economic costs.
Original language | English |
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Pages (from-to) | 303–316 |
Number of pages | 14 |
Journal | Theoretical and Applied Climatology |
Volume | 117 |
Issue number | 1-2 |
DOIs | |
Publication status | E-pub ahead of print - 15 Sept 2013 |
ASJC Scopus subject areas
- Atmospheric Science