Crash Reduction factors (as of 02/14/2014) Florida Department of Transportation

Note: Use of CRFs based on less than 5 projects (Column C) are not recommended for use in B/C analysis. Positive CRFs imply reduced crashes. Negative CRFs imply increased crashes.

ID Improvement Potential Controlling Criteria Application Number of Projects Total Fatal Injury PDD Urban Rural Night Day Rear-End Angle Left-Turn Right Turn Side-Swipe Fixed Object Head-On Pedestrian Re-Orbit Road Worst-Source

18 Add turn bay x x x 8 10 52 16 -1 10 10 1 11 5 6 21 36 20 -222 -190 -36 48

19 Add right turn x x 8 9 67 9 8 0 52 -6 3 11 16 37 1 -20 -39 -33 -49 100

20 Add LT (T-intersection) x x 3 42 9 56 31 42 43 -39 61 37 84 84 -81 55 -55 100 48

21 Add LT (Y-intersection) x x 1 42 -118 53 31 42 43 24 56 52 48 84 46 17 32 69 -118 27

23 Guardrail at bridges end x x 0 0 0 0 0 0 0 0 0 0 1 -184 -55 74 -120 100 5

24 Guardrail at steep embankments x x x 3 -5 -3 3 -16 -2 -19 -63 2 3 -184 -55 74 -120 100 5

25 Guardrail at steep embankments with curve x x x x 1 -256 -78 - - -256 -167 100 11

22 Add 2nd LT lane in same direction as existing x x x 15 4 0 13 -3 1 92 0 2 1 22 30 45 -33 28 -135 -25 13

26 Guardrail at roadside obstacles (piers, sign posts, poles, etc.) x x x 1 52 60 37 52 27 62 44 100 68 37 100 100 54

35 Install double sided guardrail on wider median x x x 12 -16 33 1 -38 -29 1 -15 -17 3 -4 2 -83 61 -96 28 -54

27 Guardrail end treatments x x x 0

28 Guardrail relocation x x x 0

29 Guardrail removal x x x 0

30 Add painted median x x x 2 43 78 43 40 43 -273 25 33 14 68 66 62 -72 57 83 -15 39

31 Add raised median x x x 18 20 38 19 20 20 22 19 2 29 48 23 41 -2 45 22 -37

32 Increase median width x x x 4 2 -12 0 -3 -10 100 -19 3 3 -43 5 3 -28 30 -69 -224 60 45

33 Add two-way LT lanes x x 12 41 35 45 39 40 44 33 44 58 32 36 32 36 32 38 14 -24 27

34 Install concrete median barrier x x x 1 -37 56 -27 -46 -37 -71 -36 -46 -407 56 94 29 -112 9 -58 -73 -48

36 Install attenuator type (BC) barrier x x x 0

37 Upgrade to concrete median barrier x x x 0

38 Upgrade to attenuator barrier x x x 0

39 Pavement deslicking x x 4 -3 -30 -13 2 -2 -20 -34 3 17 -24 -7 8 -43 8 -399 35 -127 30

40 Skid Hazard overlay x x 95 -6 -53 -5 -6 -5 -19 -11 -3 2 -35 0 5 -11 -9 -19 -13 -7 18

41 Pavement grooving x x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 26

42 Eliminate parking x x x x 4 12 100 11 12 12 8 13 2 29 32 46 25 14 13 63 26

43 Change two-way operation to one-way x x 0

44 Prohibit turns x 2 -190 100 -99 -309 -190 -43 -360 -198 -138 -19 -19 -19 -99

46 Delineation of right edge lines x x 0

47 Delineation of painted median edge lines x x 1 -76 -18 -155 -76 -65 -85 -85 7 -85 31 -410

48 Centerline striping x 0

49 Delineation of no passing stripes x x x x x 0

50 Delineation of reeffectorized guide markers x x x 0

51 Delineation of reeffectorized raised pavement markers (center line) x x x 1 10 23 11 5 21 16 3 7 7 -62 100 81 -36 38 100 25 7

52 Delineation of general pavement markings (stop bar, ped crossing, code 46-51) x x x 0

54 Intersection delineation x x 0

45 Modify speed limit (increase or decrease) x x x x x 1 52 56 50 53 52 54 -18 75 85 71 56 78

53 Delineation of guide posts on curves x x 0

7 Modify signal and add channelization x 10 28 -87 27 29 28 30 -1 35 11 37 49 25 -42 -20 -87 38 -17

8 Remove signal x 0 0 0 0 0 0 0 0 59 -22 80 -30 -117 100 -63 100 100

9 Add flashing warning signal (signalization) x x 4 -2 100 -37 28 -2

10 Interconnect traffic signals x 0

11 New LT channelization w/ LT phase (signalized) x 9 17 59 36 -9 16 44 16 19 5 16 50 -42 12 -1 15 29 68

12 New LT channelization w/o LT phase (signalized) x 10 31 79 35 26 31 39 33 30 18 46 61 42 39 -26 38 41 12

14 Modify intersection at signalized intersection x x x 28 6 -24 13 0 5 78 1 8 7 10 28 11 3 21 -9 16 24

16 Modify channelization and add signal x x 2 22 22 21 22 22 22 -131 18 11 16 39 33 -6 58 -68 16 -26 5

17 Increase storage lane x 8 11 -76 15 9 20 -10 -9 17 0 8 15 -36 7 1 -68 17 -6

4 Add signal at channelized intersection x 7 11 31 -18 11 11 -13 18 29 20 17 7 -4 -272 -272 7 -86 22

3 Add signal and channelization x 19 19 25 13 17 21 -41 31 -8 40 50 26 -16 -3 48 58 51 34

2 New signal at non-channelized intersection x 11 15 58 15 14 20 -27 21 13 -5 11 34 23 23 51 -46 13 26

1 New signal at channelized intersection x 31 12 15 20 -1 13 7 4 16 -51 53 16 70 10 -40 53 -90 20

15 Modify intersection at non-signalized intersection x x x 5 18 66 32 6 18 100 13 15 10 25 59 43 31 -53 39 -2 -2

13 New LT channelization (nonsignalized intersection) x 46 3 61 9 -6 -6 20 -26 9 -5 7 24 42 1 -19 -26 6 0

5 Modify signal at non-channelized intersection x 2 -99 -23 -118 -85 38 -141 -126 -73 -48 -94 -188 100 -23 38 7 -48

6 Modify both signal and channelization x 15 24 50 33 13 25 -20 7 29 6 30 66 -4 4 4 -59 34 -164

DS LW SW BW HA SE VA G SSD CS VC HC SC Other

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