Accident Diagnosis and Evaluation System in Parking Lots Using Multisource Data Based on Bayesian Networks
Table 9
Variable names and abbreviations in the database.
Variable name (abbreviation)
Explanation
DHSMV day of week (DAYOWEEK)
—
First cause of accident event (FRST_EVNT_CAUS_CD)
Describes the primary cause of a vehicle accident, such as a vehicle colliding while backing up or a collision with a parked car, traffic gate, or the fixed object
Federal functional classification (FUNCLASS)
—
Location code (HWYLOCAL)
The area in which the accident occurred (within the city, urban or rural area)
The prevailing type of land use (LANDUSE)
Described as commercial or residential land use, with the density situation
Light condition (LGHTCOND)
—
Maximum speed limit (mph) (MAXSPEEDLMT)
The maximum speed limit in the parking area, divided into 10, 15, 30, 40, and 45 five cases
Highway median width (MEDWIDTH)
—
Point of impact (POINTIMP)
Describe the part of the vehicle affected in an accident, including 23 cases such as the right front corner, right rear corner, and left front door
Total damage amount (PROPERTY)
—
Road surface condition (RDSURFCD)
—
Route signing qualifier (RTESGNCD)
Describe the signing and use of the road, divided into nine cases: alternate, business route, bypass, spur, loop, proposed, temporary, and truck route
Number of people using safety equipment (SAF_EQUIP_USED_NUM)
—
Highway shoulder type, adjacent to outside travel lane (SHLDTYPE)
—
Time that accident has occurred (TIME)
Divide the 24-hour day into four time periods
Total number of drivers involved (TOT_OF_DR_NUM)
—
Total number of people involved (TOT_OF_PERS_NUM)
—
Total number of vehicles involved (TOT_OF_VHCL_NUM)
—
Direction of travel (TRAVDIR)
—
Type of roadway parking (TYPEPARK)
Types of parking spaces, divided into ten categories, including whether there are curbs on both sides, with or without guardrails, and so on
Type of road (TYPEROAD)
—
Shoulder type (TYPESHLD)
Inside shoulder type
Urban size (URBSIZE)
Classification of urban types by different population size
Type of vehicle damage (VEHDMTYP)
—
Vehicle fault condition (VEHFLTCD)
—
Vehicle movement (VEHMOVE)
Describe the movement state of the vehicle when an accident occurs, including fourteen states such as straight ahead, slow down, making left/right turn, and backward
Vehicle speed at the time of the crash as estimated (VEHSPEED)
The speed range at the time of the accident was divided into four categories, respectively
