Methodologies for estimating advisory curve speeds on Oregon highways.

Dixon, Karen; Rohani, Joshan W.; Oregon State University. School of Civil and Construction Engineering

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Methodologies for estimating advisory curve speeds on Oregon highways.

2008-01-01
By Dixon, Karen ; Rohani, Joshan W.

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Details:

Creators:

Dixon, Karen ; Rohani, Joshan W.

Dixon, Karen ; Rohani, Joshan W. Less -
Corporate Creators:

Oregon State University. School of Civil and Construction Engineering
Corporate Contributors:

United States. Federal Highway Administration
Subject/TRT Terms:

[+]

Evaluation Speed Zones Speed Zoning (Traffic Engineering)--Oregon Traffic Signals Traffic Signs Traffic Signs And Signals--Oregon--Evaluation
Publication/ Report Number:

FHWA-OR-RD-08-04
Resource Type:

Tech Report
Geographical Coverage:

Oregon
Edition:

Final report.
Corporate Publisher:

Oregon. Dept. of Transportation. Research Unit
Abstract:

This report reviews an Oregon research effort to evaluate the identification and marking of advisory speeds on Oregon

highways. In particular, this research effort focused on the implications of modified advisory speed thresholds and

identification procedures following the most recent and the upcoming MUTCD and the Traffic Control Devices (TCD)

Handbook recommendations. The primary objectives of this research effort were to help identify the basis for the current

and proposed advisory speed posting procedures (with specific attention to the horizontal curve location on rural roads and

passenger vehicle condition), to evaluate Oregon placement strategies at a variety of locations, and to identify potential

criteria for establishing advisory speeds for these curved sections on Oregon highways. Included with this evaluation is an

assessment of associated costs for implementation of a modified advisory speed policy in Oregon. Through the use of

both manual and digital ball-bank devices, the report identifies compliance of current and future advisory speed thresholds

for both State- and county-maintained roads, expected costs for upgrading State-maintained facilities, evaluation of

alternative computational methods, and an assessment of the differences observed between the two different ball-bank

devices.
Format:

PDF
Funding:

SPR 641
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:a33be8e190db44679892490f1da387aaa701c2b4b9d186d9c610860a910c7348
Download URL:

https://rosap.ntl.bts.gov/view/dot/21838/dot_21838_DS1.pdf
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Methodologies for estimating advisory curve speeds on Oregon highways.

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