|
|
|
Çѱ¹µµ·ÎÇÐȸ / v.12, no.2, 2010³â, pp.43-49
|
ZAM ¸ðÇüÀ» ÀÌ¿ëÇÑ Ã»Áֽà °£¼±°¡·Î ±¸°£ÀÇ »ç°í¸ðÇü °³¹ß
( Developing the Accident Models of Cheongju Arterial Link Sections Using ZAM Model ) |
| ¹Úº´È£;±èÁØ¿ë; ÃæºÏ´ëÇб³ µµ½Ã°øÇаú;ÃæºÏ´ëÇб³ µµ½Ã°øÇаú;
|
|
|
 |
|
| |
| ÃÊ ·Ï |
| º» ¿¬±¸´Â ûÁÖ½ÃÀÇ °¡·Î±¸°£ ±³Åë»ç°í¸¦ ´Ù·ç°í ÀÖ´Ù. ¿¬±¸ÀÇ ¸ñÀûÀº °¡·Î±¸°£ÀÇ »ç°í¸ðÇüÀ» °³¹ßÇÏ´Â µ¥ ÀÖ´Ù. À̸¦ À§Çؼ ÀÌ ¿¬±¸¿¡¼´Â Àüü 322°³ ¼¼ºÎ±¸°£À¸·Î ºÐ¸®µÈ °£¼±µµ·ÎÀÇ »ç°í ÀڷḦ ÀÌ¿ëÇÏ¿© ZAM ¸ðÇüÀ» °³¹ßÇϴµ¥ ÁßÁ¡À» µÎ°í ÀÖ´Ù. ZAM ¸ðÇüÀÇ ÀÏÁ¾ÀÎ ZIP(zero inflated Poisson model)°ú ZINB(zero inflated negative binomial model)¸¦ Áß½ÉÀ¸·Î ºÐ¼®ÇÑ ¿¬±¸ÀÇ ÁÖ¿ä°á°ú´Â ´ÙÀ½°ú °°´Ù. ù°, ¸ðÇüÀÇ ÀûÇÕ¼ºÀ» °áÁ¤ÇÏ´Â Vuong Åë°è °ª°ú °úºÐ»ê°è¼ö ${alpha}$ÀÇ t Åë°è °ªÀ» ¹ÙÅÁÀ¸·Î °³¹ßµÈ ´Ù¾çÇÑ ¸ðÇüÀ» Æò°¡ÇÑ °á°ú, Æ÷¾Æ¼Û, À½ÀÌÇ×, ZIP ¹× ZINB ȸ±Í¸ðÇü Áß ZINB ¸ðÇüÀÌ ÃÖÀûÀÎ °ÍÀ¸·Î ³ªÅ¸³´Ù. µÑ°, ZINB ¸ðÇüÀº t, ${
ho}$ ¹× ${
ho}^2$°ª (0.63)ÀÇ °üÁ¡¿¡¼ º¸¸é, ´Ù¸¥ ¸ðÇü¿¡ ºñÇØ¼ Åë°èÀûÀ¸·Î ¸Å¿ì ÀÇ¹Ì ÀÖ´Â ¸ðÇüÀ¸·Î Æò°¡µÈ´Ù. ¸¶Áö¸·À¸·Î, °³¹ßµÈ ZINB ¸ðÇüÀÇ »ç°í ¿äÀÎÀº ±³Åë·®, ÁøÃâÀÔ±¸ ¼ö ±×¸®°í Á߾Ӻи®´ë ±æÀÌ·Î ºÐ¼®µÈ´Ù. ±³Åë·®°ú ÁøÃâÀÔ±¸ ¼ö´Â »ç°í¹ß»ý¿¡ '+'¿äÀÎ, ±×¸®°í Á߾Ӻи®´ë ±æÀÌ´Â '-'¿äÀÎÀ¸·Î Æò°¡µÈ´Ù. |
|
| This study deals with the traffic accident of the Cheongju arterial link sections. The purpose of the study is to develop the traffic accident model. In pursuing the above, this study gives particular attentions to developing the ZAM(zero-altered model) model using the accident data of arterial roads devided by 322 small link sections. The main results analyzed by ZIP(zero inflated Poisson model) and ZINB(zero inflated negative binomial model) which are the methods of ZAM, are as follows. First, the evaluation of various developed models by the Vuong statistic and t statistic for overdispersion parameter ${alpha}$ shows that ZINB is analyzed to be optimal among Poisson, NB, ZIP(zero-inflated Poisson) and ZINB regression models. Second, ZINB is evaluated to be statistically significant in view of t, ${
ho}$ and ${
ho}^2$ (0.63) values compared to other models. Finally, the accident factors of ZINB models are developed to be the traffic volume(ADT), number of entry/exit and length of median. The traffic volume(ADT) and the number of entry/exit are evaluated to be the '+' factors and the length of median to be '-' factor of the accident. |
| |
| Ű¿öµå |
| »ç°í¸ðÇü;ZAM ¸ðÇü;°£¼±°¡·Î ±¸°£;À½ÀÌÇ× È¸±Í¸ðÇü;»ó°ü°ü°è ºÐ¼®;accident model;ZAM model;arterial link sections;negative binomial regression model;correlation analysis; |
| |
|
|
 |
|
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.12, no.2, 2010³â, pp.43-49
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201023064629241)
¾ð¾î : Çѱ¹¾î |
|
| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
|
|
|
|
|
|