IHSDM Download
Interactive Highway Safety Design Model (IHSDM): Downloading and Installing IHSDM
IHSDM is a suite of software analysis tools used to evaluate the safety and operational effects of geometric design decisions on highways.
General
Legacy ID
21
Safety Evaluation of Discontinuing Late-Night Flash Operations At Signalized Intersections
BACKGROUND
During late-night flash (LNF) mode (from late night to early morning hours), traffic signals flash yellow for one road (typically, the major road), requiring caution but no stopping, and flash red for the other road (typically, the minor road), requiring drivers to stop and then proceed through the intersection after yielding to the traffic on the major road. The intent of LNF is to reduce energy consumption and delay during periods of low traffic demand.
Safety Effects of Horizontal Curve and Grade Combinations on Rural Two-Lane Highways (Calculator Tool)
Download Excel Calculator Tool Here (2.10 MB)
This is an .xlsm file which can only be opened using Microsoft® Excel®.
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