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Andrew Ba Tran
May 20, 2016
Exploring different ways to visualize traffic data.
Wethersfield Police | Traffic Stops
47.91 percent of drivers stopped by Wethersfield officers were non-white, compared with 31.04 percent statewide.
47.42 % NON-WHITE
The driving-age population is 47.42 percent minority in Wethersfield and 31.04 minority statewide.
Gender
In Wethersfield
- 63.05 percent were men
- 36.95 were women
Statewide
- 63.16 percent were men
- 36.84 were women
The median age for drivers stopped by officers in Wethersfield was 33; statewide, the median age was 36 years old.
When
After traffic stops
Searches
Wethersfield officers searched 5.63 percent of drivers they stopped. This chart shows the percentage of all stops involving searches of cars driven by white or non-white drivers.
Residential stops
In Wethersfield
- 18.4 percent were residents
- 81.6 were non-residents
Statewide
- 28.48 percent were men
- 71.52 were women
Black drivers: Of those stopped, how many were residents or non-residents?
Hispanic drivers: Of those stopped, how many were residents or non-residents?
Non-white drivers: Of those stopped, how many were residents or non-residents?
Type of stops
Spot checks
Blind enforcement
About Wethersfield
- Number of employees in department: 57 (21.53 per 10,000 residents)
- Number of officers: 47 (17.76 per 10,000 residents)
- Number of civilian workers: 10 (3.78 per 10,000 residents)
## Warning: Removed 1 rows containing missing values (geom_text).
Points
Statewide average
- town’s percent of non-white driving age population minus state’s percent of non-white driving age population
Black: 4.45
Hispanic: 14.76
Minorities: 18.06
- town’s percent of non-white traffic stops minus state’s percent of non-white traffic stops
Black: -6.37
Hispanic: -4.81
Minorities: -12.76
3. The distance between the two differences of 1. and 2.
Black: 10.82
Hispanic: 19.56
Minorities: 30.82
Estimated driving population
- Percent of department’s traffic stops that were
Black: 15.95
Hispanic: 25.19
Minorities: 42.44
- Percent of town’s population estimated driving population
Black: 4.9
Hispanic: 8.59
Minorities: 16.54
3. Difference between percent of stops and percent of estimated driving population
Black: 11.05
Hispanic: 16.6
Minorities: 25.9
Resident population
- Percent of residents who were pulled over
Black: 94.1
Hispanic: 90.92
Minorities: 91.59
- Percent of driving-age town population
Black: 2.75
Hispanic: 7.1
Minorities: 12.47
3. Difference between resident stops and population makeup
Black: 3.18
Hispanic: 6.33
Minorities: 9.2
Points
Disparity points ranged between 0 and 7.
Points are based on weights given to each of the differences in the three factors listed above.
Differences of more than 10 were given 1 point.
Differences of more than 5 but less than 10 and with a ratio greater than 1.75 were given .5 points
Wethersfield had a point score of 7
Exploratory charts
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