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Çѱ¹µµ·ÎÇÐȸ / v.10, no.1, 2008³â, pp.155-164
ÁöÁ¡°ú ±¸°£±â¹Ý ÀڷḦ Ȱ¿ëÇÑ ½Ç½Ã°£ ÅëÇà½Ã°£ ÃßÁ¤ ¸ðÇü
( Real-time Travel Time Estimation Model Using Point-based and Link-based Data )
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ÃÖ±Ù µé¾î ³Î¸® È®´ëµÇ´Â ITS½Ã¼³°ú ÀåºñÀÇ È¿À²ÀûÀΠȰ¿ëÀ» À§Çؼ­´Â ½Ç½Ã°£ ÅëÇà½Ã°£¿¹Ãø°ú °°Àº Çٽɱâ¼úÀÇ °³¹ßÀÌ ¸Å¿ì Áß¿äÇÏ´Ù. ½Ç½Ã°£ ÅëÇà½Ã°£ ¿¹Ãø±â¼úÀ» ÅëÇØ µµ·Î ÀÌ¿ëÀÚ¿¡°Ô ÅëÇà½Ã°£ Á¤º¸¸¦ Á¦°øÇØÁÜÀ¸·Î½á ¿îÀüÀÚ°¡ Á¤º¸¿¡ ±â¹ÝÀ» µÐ ¼±ÅÃÀ» ÇÒ ¼ö ÀÖ°Ô µÇ¸ç, ÀÌ¿¡ µû¶ó µµ·ÎÀÌ¿ëÀÚÀÇ ÅëÇà È¿¿ë ¹× µµ·Î½Ã¼³ ÀÌ¿ëÈ¿À²À» ±Ø´ëÈ­ÇÒ ¼ö ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â ÀÚ·á ¼ºÁúÀÌ ´Ù¸¥ VDSÁ¤º¸¿Í AVIÁ¤º¸¸¦ ÇϳªÀÇ Æ² ¾È¿¡¼­ À¶ÇÕÇÏ´Â ¸ðÇüÀ» Á¦½ÃÇÏ¿´À¸¸ç, À̸¦ ÅëÇØ VDSÁ¤º¸ÀÇ ½Ç½Ã°£¼º°ú AVI Á¤º¸ÀÇ Çö½Ç¹Ý¿µ Ư¼ºÀ» ¹Ý¿µÇÑ ÅëÇà½Ã°£ÃßÁ¤ÀÌ °¡´ÉÇÏ°Ô µÇ¾ú´Ù. ¶ÇÇÑ ½Ç½Ã°£ ±³ÅëÁ¤º¸ Á¦°øÀ» À§ÇØ ¾Ë°í¸®ÁòÀÇ ¼öÄ¡¿¬»ê 󸮷®ÀÌ ½Ç½Ã°£ ÇöÀå Àû¿ëÀÌ °¡´ÉÇÑ ¼öÁØÀÌ µÇµµ·Ï ¸ðÇüÀ» °³¹ßÇÏ¿´´Ù. º» ¿¬±¸¿¡¼­ Á¦½ÃµÈ ÅëÇà½Ã°£ ÃßÁ¤ ¸ðÇüÀÇ Àû¿ë°¡´É¼º°ú ½Å·Ú¼ºÀº ½ÇÁ¦ ±¹µµ ±³Åë·®ÀڷḦ ÀÌ¿ëÇÏ¿© °ËÁõÇÏ¿´´Ù. ½ÇÇè°á°ú¿¡ µû¸£¸é º» ¸ðÇüÀº ¿¬»êó¸® È¿À²¼ºÀÌ ¸Å¿ì ¿ì¼öÇÏ¿© ½Ç½Ã°£ ¿î¿µ ÀÌ °¡´ÉÇÒ »Ó¸¸ ¾Æ´Ï¶ó ½Ç½Ã°£À¸·Î ¼öÁýµÇ´Â °ËÁöÁ¤ º¸¸¦ »ç¿ëÇÔÀ¸·Î½á ¿¹ÃøÀÇ Á¤È®µµ¸¦ Çâ»ó½ÃÄ×´Ù. ƯÈ÷ º» ¿¬±¸¿¡¼­ Á¦½ÃÇÑ ÀÌÁúÀû ÀÚ·áÀÇ À¶ÇÕ¹æ¹ýÀº ÇâÈÄ »õ·Î¿î ÇüÅÂÀÇ °ËÁöÀڷḦ Ȱ¿ëÇϴµ¥ À־ ¸Å¿ì À¯¿ëÇÏ°Ô »ç¿ëµÉ ¼ö ÀÖÀ» °ÍÀ¸·Î ±â´ëµÈ´Ù.
It is critical to develop a core ITS technology such as real-time travel time estimation in order that the efficient use of the ITS implementation can be achieved as the ITS infrastructure and relevant facilities are broadly installed in recent years. The provision of travel time information in real-time allows travellers to make informed decisions and hence not only the traveller's travel utilities but also the road utilization can be maximized. In this paper, a hybrid model is proposed to combine VDS and AVI which have different characteristics in terms of space and time dimensions. The proposed model can incorporate the immediacy of VDS data and the reality of AVI data into one single framework simultaneously. In addition, the solution algorithm is made to have no significant computational burden so that the model can be deployable in real world. A set of real field data is used to analyze the reliability and applicability of the proposed model. The analysis results suggest that the proposed model is very efficient computationally and improves the accuracy of the information provided, which demonstrates the real-time applicability of the proposed model. In particular, the data fusion methodology developed in this paper is expected to be used more widely when a new type of traffic data becomes available.
 
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ÅëÇà½Ã°£ÃßÁ¤;ÇÏÀ̺긮µå ¸ðÇü;Â÷·®ÅëÇà±ËÀû;½Ç½Ã°£;travel time estimation;hybrid model;vehicle trajectory;real-time;
 
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.10, no.1, 2008³â, pp.155-164
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200814364662052)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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