What is it about?

The paper presents a practical procedure using a completely new index to determine whether a sight-hidden dip (SHD), a common shortcoming in the alignment of highways, may be critical for traffic safety. 23 road segments were evaluated under this approach.

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Why is it important?

Sight-hidden dips could be a hazard for drivers since head-on crashes may occur during passing manoeuvers.


Shortcomings in perspective can create potential issues in highway operation as they mislead drivers. This study provides a method to address decision making.

Dr. César De Santos-Berbel
Universidad Politecnica de Madrid

Read the Original

This page is a summary of: An index for sight-hidden dips assessment, Proceedings of the Institution of Civil Engineers - Transport, February 2016, ICE Publishing,
DOI: 10.1680/jtran.14.00043.
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