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Because NMVCCS investigators were at the scene with emergency responders, the database contains crash contributing factors and driver behavior data not in any other database.
Figure 9 shows the critical reason coded by the NMVCCS investigator in intersection crashes (SCP, LTAP/OD, and LTAP/LD) compared to all other crashes in NMVCCS.
Also unique to NMVCCS is a determination of which vehicle had the right of way.
Age Goup of Drivers that Had Right of Way and did not have Right of Way in SCP, LTAP/OD, and LTAP/LD Intersection Crashes from the NMVCCS Database.
Police Reported Alcohol Involvement for Drivers that Had Right of Way and did not have Right of Way in SCP, LTAP/OD, and LTAP/LD Intersection Crashes from the NMVCCS Database.
Although time consuming, some of these road geometry values could be extracted from the scene diagrams prepared by the crash investigators in the NASS/CDS and NMVCCS databases.
NMVCCS was only collected for a 2.5 year period between 2005 and 2007.
Another limitation of the NMVCCS database was that the data were collected prior to the proliferation of cellphone use in the U.S.
including NASS/GES, NASS/CDS, FARS, and NMVCCS. Straight Crossing Path (SCP), Left Turn Across Path Opposite Direction (LTAP/OD), and Left Turn Across Path Lateral Direction (LTAP/LD) made up 78% to 98% of all crossing path crashes across data sources.
In NMVCCS value 2 or 3 for the variable "reljnct" were identified as intersection crashes.
The NMVCCS investigators also code Collision Deformation Classification (CDC) for vehicles involved in collisions.
CRITICAL REASON FOR CRASH CODED FOR SCP, LTAP/OD, AND LTAP/LD CRASHES IN NMVCCS. SCP LTAP/OD LTAP/LD Front-Left 42% 15% 63% Front-Front 30% 12% Front-Right 50% 50% 12% Other/Unknown 8% 5% 13% Figure A9.
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