NCHRP Report 518:

Safety Evaluation of Permanent Raised Pavement Markers

Status: Not for Sale

Size: 71 pages, 8.5 x 11

Publication Year:2004

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Authors:
A Smiley; H McGee; B Persaud; C Lyon; G Bahar; C Mollett; T Smahel; Transportation Research Board
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TRB's National Cooperative Highway Research Program (NCHRP) Report 518: Safety Evaluation of Permanent Raised Pavement Markers examines the safety performance of snowplowable permanent raised pavement markers on two-lane roadways and four-lane freeways. ...
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Table of Contents
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Front Matter	i-x
Summary	1-2	(skim)
Chapter 1 - Introduction	3-3	(skim)
2.1.2 Retroreflective PRPMs	4-4	(skim)
2.1.3 Implementation Criteria and Maintenance Procedures	5-6	(skim)
2.2.1 Review of Literature	7-11	(skim)
2.2.2 Methodological Problems in Past Research	12-12	(skim)
2.3.1 Driver Needs with Respect to Delineation and Visibility	13-13	(skim)
2.3.2 Visibility of PRPMs	14-16	(skim)
2.3.3 Driver Behavior in Response to PRPMs	17-22	(skim)
2.3.4 Summary	23-23	(skim)
3.1 State Survey and Selection of Potential States for PRPM Safety Evaluation	24-24	(skim)
3.2.1 PRPM Treatment Sites Inventory	25-25	(skim)
3.2.2 Reference and Comparison Group Sites	26-26	(skim)
3.2.3 Crash Data	27-27	(skim)
3.2.5 Traffic Volume Data	28-30	(skim)
3.2.6 Additional Delineation and Guidance Measures	31-32	(skim)
4.1 Composite Analysis Methodology	33-33	(skim)
4.2.2 Multivariate Modeling of the Index of Effectiveness (Theta)	34-34	(skim)
4.3.3 Multivariate Modeling of the Index of Effectiveness (Theta site)	35-36	(skim)
4.4.1 Composite Analysis	37-38	(skim)
4.5 Results of the Composite Analysis for Four-Lane Divided Expressways	39-39	(skim)
5.1.1 Overview of Human Factors Issues	40-40	(skim)
5.1.2 Expected PRPM Impacts on Two-Lane Roadways	41-41	(skim)
5.2.2 Expected PRPM Impacts on Four-Lane Freeways,	42-43	(skim)
6.1 Background	44-44	(skim)
6.4 Proposed Revisions to the MUTCD	45-45	(skim)
6.5 Overview of the Analytical Engineering Procedure	46-46	(skim)
6.6.2 Step 2: Estimate Expected Nighttime Nonintersection Crashes without PRPMs	47-47	(skim)
6.6.3 Step 3: Estimate Expected Nighttime Nonintersection Crashes with PRPMs	48-48	(skim)
6.6.5 Step 5: Conduct a Benefit-Cost Analysis	49-50	(skim)
Chapter 7 - Conclusions	51-52	(skim)
References	53-54	(skim)
Appendix A - Details of Calibrated Safety Performance Functions	55-60	(skim)
Abbreviations used without definitions in TRB publications	61-61	(skim)

Description

TRB's National Cooperative Highway Research Program (NCHRP) Report 518: Safety Evaluation of Permanent Raised Pavement Markers examines the safety performance of snowplowable permanent raised pavement markers on two-lane roadways and four-lane freeways.

NCHRP Report 518:

Safety Evaluation of Permanent Raised Pavement Markers

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