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Table 1 Attributes retained for the description of accidents

From: Data mining combined to the multicriteria decision analysis for the improvement of road safety: case of France

Attribute name

Possible values: items

Description

Attributes retained from the table characteristics

num_Acc

Alphanumeric code

Accident identification number

Month

January, February, …, December

Month of the accident

hour_of_the_accident

Morning, night

Day part of the accident

Light

Full day, dawn, night with public lighting lights, night without public lighting, Night with public lighting not lit

lighting conditions in which the accident occurred

Urbain

In-urban, Extra-urban

Location

Intersection

Out of intersection, gyratory, intersection in T, intersection in X, intersection in Y, intersection with more than 4 branches, place, level crossing

Intersection

atmospheric_condition

Normal, light rain, heavy rain, snow–hail, fog–smoke, strong wind–storm, dazzling time, overcast

Atmospheric conditions

Type_of_collision

Two vehicles—frontal, two vehicles—from the rear, two vehicles—by the side, three vehicles and more—in chain, three or more vehicles—multiple collisions, other collision, without collision

The type of collision

indicator_of_source

Metropole, antilles, guyane, reunion, mayotte

Indicator of source

Attributes retained from the table places

num_Acc

Alphanumeric code

Accident identification number

category_of_the_road

Highway, national road, departmental road, communal road, off public network, parking lot open to public traffic or other road

Category of the road

traffic_regime

One-way, bidirectional, separate pavements, with tracks assignment variable

Traffic regime

reserved_lane

Bike path, cycle bank, reserved lan, reserved_lane

Indicates the existence of a reserved lane

declivity_of_the_road

Dish, slope, peak of coast, down of coast

declivity of the road at the place of the accident

drawing_in_plan

Straight part, curved on the left, curved right, in S

Drawing in plan of the road

state_of_surface

Normal surface, wet, puddles, flooded, snow, mud, icy, oily material, other surface state

State of surface

equipment

Underground, bridge, exchanger, railway, carrefour amenaged, pedestrian area, toll area

Equipment and infrastructure

Accident_Situation

On the pavement, on emergency stop band, on the verge, on the sidewalk, On bike path

Accident situation

Attributes retained from the table vehicles

num_Acc

Alphanumeric code

Identifier of the accident

num_veh

Alphanumeric code

Identification of the vehicle

category_of_vehicle

Bicycle, Moped < 50 cm3, VL only, VL + caravan, VL + trailer, VU only 1.5 T, PL only ≤ 7.5 T, PL only > 7.5 T, PL > 3.5 T + trailer, Tractoronly, Tractor + semi-trailer, Specialmachinery, FarmTractor, Scooter < 50 cm3, Motorcycle ≤ 125 cm3, Scooter > 50 cm3, Motorcycle > 125 cm3, Scooter > 125 cm3, LightweightQuad ≤ 50 cm3, HeavyQuad > 50 cm3, Bus, Coach, Train, Tramway, Othervehicle

Category of vehicle

fixed_Obstacl_struck

Vehicle parked, tree, metal crash barrier, concrete crash barrier, other crash barrier, building, vertical sign, pole, urban equipment, parapet, ilot, sidewalk border, ditch, another obstacle on the road, another obstacle on sidewalk, unobstructed causeway exit

Fixed obstacle eventually hit by vehicle

mobile_obstacle_struck

Pedestrian, vehicle, rail vehicle, domestic animal, wild animal, other mobile

Mobile obstacle eventually hit by vehicle

initial_shock_point

Before, front right, left front, rear, right back, left rear, right side, left side, multiple shocks

Initial shock point

manoeuvre

No change of direction, same direction and same file, between 2 files, In reverse, reverse direction, crossing the median, in the bus corridor in the same direction, in the bus lane in the opposite direction, by inserting, turning back on the roadway, changing lane left, changing lane right, deported left, deported right, turning left, turning right, exceeding left, exceeding right, crossing the roadway

Parking maneuver, avoidance maneuver, opening of door, stopped off parking

Principal maneuver before the accident

nb_occupants_pub_trans

Integer

Number of occupants of the vehicle

Attributes retained from the table users

num_Acc

Alphanumeric code

Identifier of the accident

num_veh

Alphanumeric code

Identification of the vehicle

place_of_user

An Integer between 1 and 9

Allows to locate the place occupied in the vehicle by the user at the time of the accident

category_of_user

Driver, passenger, pedestrian, pedestrian in rollerblade or scooter

Category of user

Severity_accident_user

Unharmed, Killed, Hospitalized wounded, Wounded light

Severity of the accident for each user

user_gender

M, F

Gender of user

age_of_user

< 20, [20, 30], [31, 45], [46, 60], > 60

Age of user

reason_displacement

Home-work, home-school, shopping, professional use, promenade, other reason for displacement

Reason for displacement the user at the time of the accident

security_equipment

Belt, helmet, child device, belt used, belt unused, belt indefinite use, helmet used, helmet unused, helmet indefinite use, child device used, child device unused, child device indefinite use, reflective equipment used, reflective equipment unused, reflective equipment indefinite use, other security equipment used, other security equipment unused, other security equipment indefinite use

the existence and use of security equipment

location_pedestrian

On pavement A + 50 m from the pedestrian crossing, on pavement A − 50 m from the pedestrian crossing, on pedestrian crossing without light signalling, on pedestrian crossing with light signalling, on the sidewalk, on the accoutrement, on refuge or BAU, on against aisle

Location of the pedestrian at time the accident

pedestrian_action

Moving unspecified, moving in the direction striking vehicle, moving opposite direction of the striking vehicle, crossing, hidden, playing-current, with animal, other pedestrian action, on against aisle

Pedestrian action at time the accident

accompanying_pedestrian

Alone, accompanied, in a group

This variable indicates if the injured pedestrian was alone or not