Study Details
Study Title: Evaluating The Imapct of Rumble Strips on Fatal and Injury Freeway Crashes
Authors: Dadashova et al.
Publication Date:JAN, 2018
Abstract: Rumble strips are known to be one of the most cost-effective treatments for preventing roadway departure crashes. However, in recent years some studies have found controversial results indicating that rumble strips may in fact increase the number of more severe crashes. Although these effects are estimated to be very small, highway safety agencies deploy these treatments with an expectation that they will reduce all crash types. In this paper, the authors have conducted a statistical evaluation to determine the impact of rumble strip presence on fatal and injury crashes at freeway locations. For this purpose, the authors acquired an existing database used for one of the aforementioned studies and evaluated the variables using alternative assessment methods. The results of the current study suggest that the rumble strips do in fact improve the safety outcomes in rural freeways. These findings are observed to also apply to urban freeways, but the effects are not statistically significant for the study database.
Study Citation: Dadashova, B., L. Wu., and K. Dixon. "Evaluating The Imapct of Rumble Strips on Fatal and Injury Freeway Crashes". Presented at the 97th Annual Meeting of the Transportation Research Board, Paper No. 18-01440, Washington, D.C., (2018).
CMFs Associated With This Study
Category: Shoulder treatments
Countermeasure: Install shoulder rumble strips
| CMF | CRF(%) | Quality | Crash Type | Crash Severity | Roadway Type | Area Type |
|---|
| 0.57 | 43 |  | Other | K,A | All | Rural |
| 0.56 | 44 | | Single vehicle | K,A | All | Rural |
| 0.82 | 18 | | Single vehicle | K,A | All | Urban |
