| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for correcting the matching of estimated link travel time data in which statistical link travel time data is corrected so as to match up with a present link travel time acquired based on present traffic information. SOLUTION: On the basis of the ratio R<SB>1</SB>between the present link travel time T<SB>p</SB>and a link travel time T<SB>s</SB>estimated based on the statistical link travel time data, the statistical link travel time data is corrected to compute a first ratio correction line. Then a time axis is temporarily, vertically moved in such a way that the present link travel time Tp may take 0(<SB>s</SB>). The ratio R<SB>2</SB>between a present link travel time T<SB>pb</SB>previous by a unit time and a link travel time T<SB>sb</SB>in the first ratio correction line corresponding to the time is integrated by the first ratio correction line to compute estimated link travel time data. COPYRIGHT: (C)2005,JPO&NCIPI |
