Safety of Intersections on High-Speed Road Segments With Superelevation

Savolainen, Peter T.; Tarko, Andrew P.

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Safety of Intersections on High-Speed Road Segments With Superelevation

2004-12-01
By Savolainen, Peter T. ; Tarko, Andrew P.

File Language:

English

Details

Creators:

Savolainen, Peter T. ; Tarko, Andrew P.
Corporate Creators:

Purdue University. Joint Transportation Research Program
Corporate Contributors:

Indiana Department of Transportation ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

FHWA/IN/JTRP-2004/25
Resource Type:

Tech Report
Geographical Coverage:

United States ; Indiana
Edition:

Final Report
Corporate Publisher:

Indiana Department of Transportation
Description:

In recent years, the State of Indiana has built a number of intersections where one or both of the roads are located on curves. The AASHTO Policy on Geometric Design of Highways and Streets recommends that in such cases “the alignment should be as straight and the gradient as flat as practical.” This wording, consistent with Part V of the Indiana Design Manual, allows for the design of intersections on curves if other solutions prove to be too expensive. Several of these intersections have raised safety concerns and led to expensive corrective measures. Due to these safety and economic issues, INDOT currently avoids designing intersections on segments with steep superelevation. The focus of this research is to determine what effect curvature and superelevation have on intersection safety. Based on the results, the goal is to provide design standards for curvature and superelevation for cases where the major road is located on a superelevated curve.
Format:

PDF
Funding:

SPR-2797
Download URL:

https://rosap.ntl.bts.gov/view/dot/90831/dot_90831_DS1.pdf
File Type:

[PDF - 4.93 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:dee5d1712955f60e7d3b8ca67ea7b4427356b902691cf0d5a75b0ae91e62928ef83d01bfff731d77b42ed875d307b21a30138333b6d199c4e1aa20b949db7e8c

File Language:

English

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