Network Screening Tool

The Network Screening Tool identifies sites with potential for safety improvement. Network-screening algorithms are used to identify locations of the following types of sites with potential for safety improvement:

• Sites with higher-than-expected accident frequencies which may indicate the presence of safety problems that are potentially correctable in a cost-effective manner, and
• Sites whose accident frequencies are not higher than expected, given the traffic volumes and other characteristics present at the site, but which nevertheless experience sufficient numbers of accidents that may potentially be improved in a cost-effective manner.

In addition, the network screening tool can identify sites with high accident severities and with high proportions of specific accident or collision types. The network screening algorithms focus on identifying spot locations and short roadway segments with potential for safety improvement, but also include the capability to identify extended route segments. Network screening and all other SafetyAnalyst algorithms can consider specific accident severity levels (fatalities and serious injuries, fatalities and all injuries, property-damage-only) or all severity levels combined.

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United States Department of Transportation - Federal Highway Administration