Case Study Filter: Speed

Rounding Out Roundabouts in CT

Connecticut
Connecticut DOT formed a roundabout committee of professionals trained on evaluating the planning, design, and construction of roundabouts on municipal and state roads.

Case Study in Mitigating Extreme Speeding

Florida
Traditional traffic control devices were failing on high-speed roads in Florida. FDOT saw significant and sustained reductions in extreme speeding after adding speed shields to S.R. 46. The speed shields are an innovative, low-cost countermeasure that delivered immediate and sustained speed reductions.

FDOT’s Application of Target Speed

Florida
FDOT developed a context classification guide for roadway design. Target speeds are determined by many data points, by context classification and for the safe mobility of all users.

Human Factors Approach: Let’s Get Everyone Home, Safely

Florida
Florida HP and FLHSMV reached millions of young males with a media campaign featuring calls to action for three behaviors: aggressive driving/stress management, speeding/time management, and distracted driving/multitasking.

High-Speed Lane Separation Project

Michigan
US-31/M-72 had frequent fog, blowing snow, and a severe crash pattern. After adding a center median, edgeline and centerline corrugations, guardrail, new pavement, and a flashing low visibility warning system, the segment had less severe crashes.

Lane Constrictor Intersections in Minnesota

Minnesota
Concerned with rural intersections crashes, MnDOT developed a standard layout of lane constrictors. They installed lane constrictors at 61 side street, stop-controlled locations.

MnDOT Safe System Approach Implementation Plan

Minnesota
The MnDOT Safe System Approach Implementation Plan integrates the SSA into programming. Their process involves an internal SSA implementation workgroup, tools library, speed management guide, training, and updated technical guidance documents.

Safer Mobility: Embracing Technology and Pilot Programs through the Safe System Approach

Florida Kentucky Massachusetts Missouri
Emerging innovations offer new opportunities to align with the safe system approach. Broward County, Florida identified 35 technologies for safer roads. Louisville, Kentucky developed strategies for safer speeds. MassDOT’s virtual reality pop-up experience strengthened outreach for safer people. Missouri’s predictive layered operations initiative (PLOI) enhanced post-crash care.

Meet Hazel Mae: New Hampshire’s Newest Road Safety Ambassador

New Hampshire
To help drivers understand the risks of excess speed, the New Hampshire DOT branded the "Slow and Steady" campaign. Campaign mascot Hazel Mae connects people with the message in a warm and friendly way.