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Table 1 Police and research operations outcomes

From: Optimizing sobriety checkpoints to maximize public health benefits and minimize operational costs

Checkpoint

1

2a

2b

3a

3b

4

Checkpoint type

Control

Intervention

Intervention

Intervention

Intervention

Control

Total vehicles

n/a

235

294

290

232

n/a

Total vehicles stopped

n/a

235

294

284

232

n/a

Police operations

      

 Conducted at planned location

Yes

Yes

Yes

Yes

Yes

No

 Conducted at planned hours

Yes

Yes

Yes

Yes

Yes

No

 Officers present

14

8

8

8

8

0

 Total payroll costs

$701.06

$547.43

$524.29

$557.08

$495.51

n/a

Research operations

      

 Conducted field data collection

No

Yes

Yes

Yes

Yes

No

 Research assistants present

0

4

4

5

5

0

DWI outcomes

      

 DWI investigation

2

1

6

4

1

–

 DWI arrests

0

1

0

0

0

–

 DWI convictions

0

0

0

0

0

–

 Open container

1

1

0

0

0

–

 DWI over 21

0

1

0

0

0

–

Other outcomes

      

 No operator’s license

4

15

11

7

7

–

 DWLR violations

8

3

4

1

4

–

 Registration violations

3

1

2

3

1

–

 Other violations

19

4

3

3

2

–

 Warnings

3

1

1

5

0

–

 Drug violations

0

0

1

1

0

–

 Wanted persons

0

0

0

0

0

–

 Total

37

24

22

20

14

–