Examines approach speeds and driving errors associated with the first urban multi-lane roundabout in the Oregon.

Traffic control through various rumble strip designs.

The range of colors observers classify as yellow and white under different lighting conditions.

Reviews rumble strip performance.

Summary of research on the effectiveness of warning signs related to children.

Visibility of solar-powered raised pavement markers compared to retroreflective markers.

Full text of regulation on temporary traffic control devices.

Evaluation of traffic operations and safety with flashing stop signs and optical speed bars.

Handbook to improve consistency in signing and driver compliance with the advisory speed

Applications of illuminated IPM technology.

Safety evaluation of higher retroreflectivity to reduce crashes.

How drivers approach intersections under various speeds and environmental conditions.

Learn pavement marking types, colors, line patterns and widths and take a quiz.

Learn the shape, color of regulatory, warning, construction and other signage and take a quiz.

The most current MUTCD available and links to previous editions.

Defines the standards used by road managers nationwide for traffic control devices on all streets and highways.

Guidance for improving roadway safety and understanding minimum retrorelectivity standards.

Bringing passing sight distance criteria and pavement marking practices.

Introduction and overview of using ramp management for traffic control.

Handbook on traffic management through highway ramp management.

Updates to research to meet driver night visibility needs.

Evaluation of different intersection treatments for safety.

Road safety manual for decision makers and practioners.

Safety evaluation of road painting to reduce crashes.

Resources on roadway designs that reduce vehicle traffic speeds and volumes.

Cross cutting study of issues with emergency vehicle operations and emergency vehicle preemption.

Summary of US laws and practices.

Download road marking and traffic signs regulations in the UK.