Study Details
Study Title: Benefit/Cost Evaluation of MoDOT's Total Striping and Delineation Program: Phase II
Authors: Potts et al.
Publication Date:JUN, 2011
Abstract: In 2005 and 2006, the Missouri Department of Transportation (MoDOT) undertook a major program, known as the Smooth Roads Initiative (SRI), to improve both the rideability and the visibility of over 2,300 mi of major roadways in Missouri. MRIGlobal previously conducted research for MoDOT to evaluate the safety effectiveness of SRI improvements and perform a benefit-cost evaluation of those improvements. The initial evaluation of SRI improvements was conducted using three years of crash data before implementation of SRI improvements and only one year of crash data after SRI implementation, because only one year of "after" crash data was available at the time. The evaluation presented in this report was conducted after two additional years of crash data were available; thus, the evaluation includes a three-year before study period and a three-year after study period. The safety evaluation indicated that the striping and delineation program resulted in an overall reduction of 16 percent in fatal-and-disabling-injury crashes and 11 percent in fatal-and-all-injury crashes. The striping and delineation improvements appeared to be particularly effective in reducing multiple-vehicle crashes. Results of the benefit-cost evaluation suggested that the SRI projects had an overall benefit-cost ratio of 11.2.
NOTE 1 - Additional CMFs available in paper and appendix.
NOTE 2 - Phase I previously published as a 2010 TRB paper. Phase II includes the most up to date data.
Study Citation: Potts, I.B., D.W. Harwood, C.D. Bokenkroger, and M.M. Knoshaug. "Benefit/Cost Evaluation of MoDOT's Total Striping and Delineation Program: Phase II". MRIGlobal Project No. 110749, Missouri Department of Transportation, June 2011.
CMFs Associated With This Study
Category: Delineation
Countermeasure: Install wider markings and both edgeline and centerline rumble strips with resurfacing
CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
---|
0.53 | 47 | | All | K,A | Not specified | Rural |
0.62 | 38 | | All | K,A,B,C | Not specified | Rural |
Countermeasure: Install wider markings and edgeline rumble strips with resurfacing
CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
---|
0.75 | 25 | | All | K,A | Principal Arterial Other Freeways and Expressways | Rural |
0.76 | 24 | | All | K,A,B,C | Principal Arterial Other Freeways and Expressways | Rural |
0.9 | 10 | | All | K,A,B,C | Principal Arterial Other Freeways and Expressways | Urban |
0.76 | 24 | | All | K,A | Not specified | Rural |
0.74 | 26 | | All | K,A,B,C | Not specified | Rural |
0.86 | 14 | | All | K,A,B,C | Not specified | Urban |
Countermeasure: Install wider markings and shoulder rumble strips with resurfacing
CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
---|
0.74 | 26 | | All | K,A | Principal Arterial Other Freeways and Expressways | Rural |
0.77 | 23 | | All | K,A,B,C | Principal Arterial Other Freeways and Expressways | Rural |
0.8 | 20 | | All | K,A,B,C | Principal Arterial Other Freeways and Expressways | Urban |
0.51 | 49 | | All | K,A | Not specified | Rural |
0.75 | 25 | | All | K,A,B,C | Not specified | Rural |
Countermeasure: Install wider markings with resurfacing
CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
---|
0.79 | 21 | | All | K,A | Principal Arterial Other Freeways and Expressways | Rural |
0.91 | 9 | | All | K,A,B,C | Principal Arterial Other Freeways and Expressways | Rural |
0.96 | 4 | | All | K,A,B,C | Principal Arterial Other Freeways and Expressways | Urban |
0.66 | 34 | | All | K,A | Not specified | Rural |
0.75 | 25 | | All | K,A,B,C | Not specified | Rural |
0.54 | 46 | | All | K,A | Not specified | Rural |
0.92 | 8 | | All | K,A,B,C | Not specified | Urban |
0.62 | 38 | | All | K,A | Not specified | Urban |
Countermeasure: Install wider markings WITHOUT resurfacing
CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
---|
0.78 | 22 | | All | K,A,B,C | Principal Arterial Other Freeways and Expressways | Rural |