Details:

Creators:
Rys, Margaret J. ; Karkle, Daniel E. ; Russell, Eugene R.
Rys, Margaret J. ; Karkle, Daniel E. ; Russell, Eugene R. Less -
Corporate Creators:
Kansas State University. Transportation Center
Corporate Contributors:
Kansas. Dept. of Transportation. Bureau of Materials & Research
Subject/TRT Terms:
[+]
Centerline Rumble Strips Center Lines CLRS Road Markings Rumble Strips
Publication/ Report Number:
K-TRAN: KSU-10-7
Resource Type:
Tech Report
Geographical Coverage:
Kansas
Edition:
Final report; July 2009¿Oct. 2011.
Corporate Publisher:
Kansas. Dept. of Transportation
Abstract:
The objectives of this research were: a) to obtain updated information on DOTs’ policies and guidelines for

installation of centerline rumble strips (CLRS) in the United States in order to identify current practices; b) to verify the

before-and-after safety effectiveness of CLRS currently installed in Kansas; c) to determine if CLRS cause levels of exterior

noise that can disturb nearby residents and propose a minimum distance from houses for installation of CLRS in Kansas; d)

to estimate the effects of CLRS on vehicles’ operational speed and lateral position and to verify if it is safe to install CLRS

on sections of highways with narrow shoulders; and e) provide recommendations of when it is beneficial to install rumble

strips, given known values of traffic volume, shoulder width, and the presence of other types of rumble strips.

The methodologies that were applied in this research include: a) an email survey that was sent to all state DOTs to

verify their current guidelines for installation of CLRS; b) application of Bayesian before-and-after methods to investigate

the safety effectiveness of CLRS in Kansas; c) field data collection according to standard procedures to verify if CLRS

produce exterior noise levels that can disturb residents that live nearby to treated highways, d) standard field data collection

methods to investigate how CLRS impact vehicular lateral position and operational speed; and e) modeling and

interpretation of regression equations to predict number of crashes.

Based on the analysis of safety performance function (SPF) models for total correctable crashes, on roadways with

narrow shoulders, SRS only is recommended for all annual average daily traffic levels (AADTs) considered in this study. For

AADTs lower than 5,750 vehicles per day, CLRS are recommended. For AADTs greater than 3,000 vehicles per day, the

both configuration is also recommended. The study of SPFs was limited by the fact that only 29 sections of highway were

used to build the models.

Overall, both patterns currently installed in Kansas have provided crash reductions and are recommended. Shoulder

width and traffic volume should be considered as crash predictors for enhancement of the benefits.


Format:
PDF
Funding:
C1831
Collection(s):
US Transportation Collection University Transportation Centers
Main Document Checksum:
[+]
urn:sha256:45dc094b1037d1bcf2bea4d6860c3604f903b8550a3cc44319fda0978d208c7d
Download URL:
https://rosap.ntl.bts.gov/view/dot/24776/dot_24776_DS1.pdf
File Type:

Supporting Files

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