John McCombs
John McCombs
About
Publications
Presentations
Light
Dark
Automatic
Regression
Using Wrong-Way Driving Detection Data to Identify Factors That Affect Wrong-Way Driving Behavior and Compare Detection Technologies
WWD detection data from 48 toll road exit ramps were modeled to identify the factors that affect WWD frequency.
Adrian Sandt
,
Haitham Al-Deek
,
Nizam Uddin
,
Eric Ginsberg
,
John McCombs
,
Angel Lopez Sanchez
Cite
DOI
Using context classification to develop intersection Safety Performance Functions: national survey of current practices and evaluation of benefits for rural Florida intersections
Safety engineers from 42 DOTs across the United States were surveyed about their state’s current SPF development practices and context classification.
John McCombs
,
Haitham Al-Deek
,
Adrian Sandt
,
Ghalia Gamaleldin
,
Alan El-Urfali
PDF
Cite
Article Link
Regional Perspective of Safety Performance Functions and Their Application to Florida Intersections in Suburban Residential and Urban General Context Classification Categories
In this paper, eight individual intersection group SPFs were developed for the C3R-Suburban Residential and C4-Urban General categories and compared with full SPFs for these categories.
Ghalia Gamaleldin
,
Haitham Al-Deek
,
Adrian Sandt
,
John McCombs
,
Alan El-Urfali
Cite
DOI
Developing context-specific safety performance functions for Florida intersections to more accurately predict intersection crashes
This research developed SPFs based on a new context classification system used by the Florida Department of Transportation (FDOT) which categorizes intersections into eight different categories.
Ghalia Gamaleldin
,
Haitham Al-Deek
,
Adrian Sandt
,
John McCombs
,
Alan El-Urfali
,
Nizam Uddin
Cite
DOI
Cite
×