Table 6 Comparisons between the Efficiency results for Iranian road safety performance obtained using DF-SBM-ER and DF-CCR-ER [15] methods

Azerbaijan E

0.3253

24

0.4079

24

0.3362

20

0.3405

21

0.2952

22

0.4015

20

Azerbaijan W

0.3463

23

0.4952

21

0.2656

24

0.3515

20

0.2104

25

0.3154

24

Ardabil

0.1126

29

0.0875

29

0.4106

14

0.5110

15

0.6326

14

0.5925

16

Isfahan

0.3918

21

0.4789

22

0.3411

19

0.2988

23

0.1364

27

0.2506

26

Alborz

0.9289

2

0.9622

1

0.9197

1

0.9497

1

0.9348

1

0.9509

2

Ilam

0.8053

8

0.9254

7

0.7952

6

0.9024

3

0.9049

2

0.9548

1

Bushehr

0.5988

12

0.6285

16

0.6627

9

0.6349

8

0.6492

13

0.6375

10

Tehran

0.7614

11

0.9350

6

0.3876

15

0.5619

12

0.0669

31

0.0554

31

Chaharmahal and Bakhtiari

0.8134

7

0.7723

11

0.8027

5

0.8938

5

0.5905

16

0.7009

7

Khorasan S

0.8974

3

0.9422

4

0.6862

8

0.6061

9

0.8260

6

0.7602

5

Khorasan R

0.1823

27

0.2897

28

0.093

30

0.0591

30

0.0914

28

0.0732

29

Khorasan N

0.8215

5

0.7755

10

0.6196

10

0.5691

11

0.6889

9

0.6674

9

Khuzestan

0.8014

9

0.9356

5

0.719

7

0.8914

6

0.5897

17

0.5258

18

Zanjan

0.2718

25

0.3366

27

0.3508

17

0.3633

19

0.4795

19

0.5001

19

Semnan

0.5688

16

0.6199

17

0.2918

23

0.3963

17

0.6559

12

0.5999

15

Sistan and Baluchistan

0.0613

31

0.0448

31

0.1303

27

0.0767

28

0.0832

29

0.0745

28

Fars

0.7827

10

0.9075

8

0.3437

18

0.3404

22

0.3343

21

0.3741

22

Qazvin

0.8973

4

0.9570

3

0.5304

12

0.5882

10

0.8273

5

0.7534

6

Qom

0.5051

18

0.6876

12

0.2972

22

0.1629

25

0.6868

10

0.6353

11

Kurdistan

0.1313

28

0.3758

25

0.1591

26

0.0955

27

0.1897

26

0.1492

27

Kerman

0.3717

22

0.4147

23

0.1001

29

0.0681

29

0.2477

23

0.2935

25

Kermamshah

0.4929

19

0.5575

20

0.5547

11

0.5388

13

0.5982

15

0.6328

12

Kohgiluyeh and Boyer-Ahmad

0.5853

14

0.6186

18

0.871

3

0.9136

2

0.8818

4

0.9436

3

Golestan

0.5505

17

0.6438

14

0.427

13

0.5360

14

0.7139

8

0.6879

8

Guilan

0.4532

20

0.5755

19

0.302

21

0.3956

18

0.5543

18

0.5504

17

Lorestan

0.0675

30

0.0543

30

0.0812

31

0.0590

31

0.0791

30

0.0657

30

Mazandaran

0.5878

13

0.6710

13

0.3778

16

0.4916

16

0.7595

7

0.6280

14

Markazi

0.5827

15

0.6410

15

0.1968

25

0.1122

26

0.3491

20

0.3951

21

Hormozgan

0.9335

1

0.9584

2

0.879

2

0.9017

4

0.8869

3

0.9331

4

Hamedan

0.1839

26

0.3591

26

0.1265

28

0.2156

24

0.2269

24

0.3590

23

Yazd

0.8162

6

0.8040

9

0.8378

4

0.7265

7

0.6600

11

0.6313

13