| GCat | Ops, Maintenance, Safety |
| MCat | Operations |
| SCat | Traffic Flow |
Traffic flow theory and characteristics. Traffic flow theory as it relates to planning and operating transportations systems.
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Hot Topics: Highway Safety
Professional Guides: Highway Construction
Accident Modification Factors for Traffic Engineering ![[pdf]](graphics/file_pdf.gif)
[34411] 
Estimating the safety impacts of various types of engineering improvements.
[34411] Estimating the safety impacts of various types of engineering improvements.
Conversion of Urban Four-Lane Roadways to Three-Lane Two-Way Left-Turn Lane Facilities [33591]
Guidelines for lane conversions.
[33591] Guidelines for lane conversions.
Empirical Studies on Traffic Flow in Inclement Weather [31179]
Report analyzes how weather impacts macroscopic traffic flow.
Report analyzes how weather impacts macroscopic traffic flow.
Four-Lane to Three-Lane Conversion Case Study [33592]
Video and powerpoint of seminar on lane conversions.
Video and powerpoint of seminar on lane conversions.
Impact of Trucks on Arterial LOS and Freeway Work Zone Capacity [32389]
Two part report on the effect of large trucks on traffic flow through intersections and work zones.
Two part report on the effect of large trucks on traffic flow through intersections and work zones.
Moving Bottlenecks: A Numerical Method that Converges in Flows [31851]
This paper presents a numerical method to model kinematic wave (KW) traffic streams containing slow vehicles.
[31851] This paper presents a numerical method to model kinematic wave (KW) traffic streams containing slow vehicles.
Road Safety Audits - Video [36517] Provides a background for public agencies to draw upon when developing their own Road Safety Audit (RSA)
Safety and Operational Characteristics of Two-Way Left Turn Lanes [33590]
Information on lane conversions
[33590] Information on lane conversions
Safety Evaluation of Center Two-Way Left-Turn Lanes on Two-Lane Roads [33528]
Designed to reduce the frequency of head-on crashes and rear-end crashes involving a turning vehicle.
[33528] Designed to reduce the frequency of head-on crashes and rear-end crashes involving a turning vehicle.
Traffic Analysis Tools [36516] Tools in support of traffic operations analysis to assist with transportation decisions
Traffic Bottlenecks: A Primer Focus on Low-Cost Operational Improvements [32264]
Basics of traffic bottlenecks and ways to correct them.
[32264] Basics of traffic bottlenecks and ways to correct them.
Traffic Performance of Three Typical Designs of New Jersey Jughandle Intersections (NJJIs) [30669]
Examines visual simulations to model typical geometries of traffic flow conditions for three NJJIs.
[30669] Examines visual simulations to model typical geometries of traffic flow conditions for three NJJIs.
Traffic Volume Trends [30702]
List on monthly reports of traffic volume to estimate the percentage change versus the same month in the previous year.
List on monthly reports of traffic volume to estimate the percentage change versus the same month in the previous year.
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Structures / Bridges and Design
Performance and design of bridges and bridge engineering.
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