Variable

Mean

S.D.

Min

Max

Dependent variables

number of accidents with property loss only

6.98

8.90

0

80

number of more severe accidents

0.95

1.44

0

12

Traffic flow characteristics

Passenger cars volume

1106

783

33

4603

Heavy vehicles volume (pc/h)

570

442

29

2430

Light non-passenger car vehicles volume (pc/h)

562

411

42

2245

Speed (km/h)

55.3

18.7

0

100

Geometric characteristics

Number of lanes

3.32

0.586

2

5

Number of vertical curves

0.564

0.718

0

4

Number of access roads

0.974

1.419

0

8