police | Department profile

The Derby police department pulled over 2813 drivers and had a disparity score of 2.5 out of 9, indicating "significant" disparities in the department's traffic stop practices.

CCSU researchers designed a series of measures to score police departments based on how much stopping practices varied from the state average, as well as gaps between population and stops to identify racial disparity. A point was assigned to a department for every threshold exceeded. Scores range from zero to nine. Zero indicates no sign of disparity. Any score higher than zero indicates some degree of disparity. In this list, any department without a red circle had a zero score. Scores are based in part on the racial makeup of the estimated driving population in towns. Some departments, such as university police departments at Yale and the CSCU schools, do not correspond to towns and do not have scores.

Derby officers pulled over minorities at a lower rate compared to officers statewide: 30 percent of drivers stopped by Derby officers were minorities, compared with 31 percent statewide.

Who's on the road, and who gets stopped

The estimated driving population in the area patrolled by Derby officers is 21 percent minority and 79 percent white.

White
Minority

After dark, things change

Minorities made up 33 percent of daylight-hour stops and 28 percent of stops when it was dark out.

Men pulled over more than women

Derby
64 percent of stopped drivers were men;
36 percent were women.
Statewide
63 percent of stopped drivers were men;
37 percent were women.

21% let off with a warning

On a 100% scale, this chart shows how many drivers were let go with written or verbal warnings or received an infraction, a misdemeanor summons or were arrested.

Median driver's age: 34 years old

The median age of drivers stopped by Derby officers was 34 years old. Statewide it was 36 years old.

Most drivers stopped were not local

Derby
  • 18 percent were residents of the town where they were pulled over;
  • 82 percent were non-residents.
Statewide
  • 28 percent were residents;
  • 72 percent were non-residents.

Speed is often a factor

Across the state, speeding was the most common reason for pulling drivers over. Cell phone violations, defective lights and tinted windows were other reasons listed in the data.

Searches are rare

This chart shows the percentage of all stops that involved officers searching vehicles driven by white and minority drivers.

When stops occurred, by hour, weekday and month

Derby officer profiles

Select an officer from the table below to see how their stop patterns compare with the department and the state. Officer data is anonymized, with a department-provided ID instead of a name. The bars indicate the percentage the officer's total stops that involved minority drivers. Note that some officers reported very few stops, so this list is sorted by the total number of stops each officer reported.

OfficerMinority stops%Stops
73
30% 342
65
36% 259
75
24% 222
74
29% 218
68
35% 207
61
35% 193
76
31% 158
70
24% 157
66
31% 148
52
29% 141
58
35% 122
71
12% 105
34
31% 101
45
26% 80
67
39% 77
43
30% 76
72
26% 74
46
10% 31
53
12% 26
64
43% 23
56
0% 17
63
77% 13
47
22% 9
41
25% 4
44
33% 3
39
50% 2
50
0% 2
62
50% 2
28
0% 1