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Table 26: Differences in Crashes per Million Entering Vehicles by Type of Injury and Type of Crash

Reports on the differences in crashes by frequency and percent increase/decrease and million entering vehicle crash rates by type of injury and type of crash from the before time period to the after time period. While there was a very slight increase of 1.1% in total crashes for the RLC intersections there was a 9.4% decrease in comparison intersection crashes. For both Red Light Camera intersections and comparison intersections there were large decreases in injury crashes (RLC intersections -26.1% and comparison intersections -37.3%) and smaller increases in PDO crashes (RLC intersections +12.7% and comparison intersections +1.7%). There were large decreases (-54.0%) in angle crashes at RLC intersections, a smaller decrease in angle crashes at comparison intersections (-29.3%), a 10.4% increase in RLC rear end crashes, and rear end crashes for comparison intersection decreased by 3.6%.

Table 26. Differences in Crashes per MEV by Type of Injury and Type of Crash Before Period to After Period

 

Pre-period Crash Count

Post-period Crash Count

Count Increase / Decrease

Percent Increase / Decrease

Pre-period Crashes per MEV

Post-period Crashes per MEV

Difference in Crashes per MEV

RLC Intersections

Total Crashes

1740

1769

+19

+1.1

1.42

1.48

+0.06

Injury Crashes

579

459

-120

-26.1

0.45

0.39

*-0.06

PDO Crashes

1161

1308

+147

+12.7

0.98

1.09

*+0.11

Rear End Crashes

1256

1386

+130

+10.4

1.02

1.16

*+0.14

Angle Crashes

328

213

-115

-54.0

0.27

0.18

**-0.09

Comparison Intersections

Total Crashes

1954

1787

-167

-9.4

1.14

1.04

**-0.10

Injury Crashes

681

496

-185

-37.3

0.39

0.29

***-0.10

PDO Crashes

1269

1290

+21

+1.7

0.76

0.75

+0.01

Rear End Crashes

1244

1201

-43

-3.6

0.72

0.68

-0.04

Angle Crashes

490

379

-111

-29.3

0..30

0.23

***-0.07