A comprehensive study on pavement edge line implementation : [tech summary].

Sun, Xiaoduan; Louisiana Transportation Research Center

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A comprehensive study on pavement edge line implementation : [tech summary].

2014-04-01
By Sun, Xiaoduan

[PDF-137.44 KB]

English

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Details:

Creators:

Sun, Xiaoduan
Corporate Creators:

Louisiana Transportation Research Center
Subject/TRT Terms:

[+]

Collisions Edge Lines Highway Safety Pavements Road Markings Traffic Control Devices Traffic Safety
Publication/ Report Number:

LTRC Report 508
Resource Type:

Brief
Geographical Coverage:

Louisiana
Corporate Publisher:

Louisiana Transportation Research Center
Abstract:

Reducing the number of run-oﬀ -road (ROR) crashes is a top priority for rural two-lane highways, particularly narrow, rural two-lane

highways. Previous research conducted by the Louisiana Transportation Research Center has concluded that placing edge lines on

narrow rural two-lane highways centralizes vehicular lateral position, which should help reduce the number of crashes. This project

uses the latest safety analysis method introduced by the ﬁ rst edition of Highway Safety Manual (HSM) to estimate the safety beneﬁ ts

of edge line on narrow, rural two-lane highways. The crash data from three years before and after edge line implementation were used

to develop a crash modiﬁ cation factor.

The crash modiﬁ cation factors (CMFs) for placing standard edge line markings on rural two-lane highways (without mentioning the

width of pavement) is given by the ﬁ rst edition of HSM. However, the range of the CMF (0.09, 1.10) does not indicate a positive impact

with certainty. The current Manual on Uniform Traﬃ c Control Devices (MUTCD) does not require implementing edge lines on narrow,

rural two-lane highways with average annual daily traﬃ c volume (AADT) less than 6,000. The AADT on all narrow, rural two-lane

highways in the state is less than 6,000. Thus, a comprehensive study on edge line is needed in Louisiana.
Format:

PDF
Funding:

State Project No. 30000730 ; LTRC Project No. 13-2P

State Project No. 30000730 ; LTRC Project No. 13-2P Less -
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:56e12975a0b843a038674328f3168e42deb4c98080bde6885ab7cada9953a86c
Download URL:

https://rosap.ntl.bts.gov/view/dot/27328/dot_27328_DS1.pdf
File Type:

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A comprehensive study on pavement edge line implementation : [tech summary].

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