Case Study Filter: Speed

Speed Management Pilot Program

Maryland

Speeding significantly decreased following a pilot project that combined enforcement, engineering, and outreach.

GHSA Case Study Pilot Study Report TZD Article

Context-Sensitive Speed Limit Setting

Delaware

DelDOT combats rising traffic fatalities by adopting context-sensitive speed limits, partnering with local agencies, and moving beyond the 85th percentile method.

TZD DelDot Case Study

Safety Circuit Rider Program

Virginia

The Safety Circuit Rider program provides training and technical assistance to improve safety on local roadways.

University of Virginia Webpage

FoRRRwD in Massachusetts

Massachusetts

MassDOT’s FoRRRwD initiative provided municipalities with low-cost safety countermeasures. As countermeasures were implemented, MassDOT noted reduced crashes and serious injuries from crashes.

2023 HSIP Report, pg. 7 & 25

Implementing Complete Streets in Kentucky

Kentucky

When KYTC implemented Complete Streets, they found large reductions in fatalities and serious injuries at two-way stop and signalized intersections.

KYTC Press Release KYTC Complete Streets Webpage

Route 101 Safety Improvements

New Hampshire

NHDOT used a data-driven process to identify and implement Safe System countermeasures to improve safety on Route 101. The selected alternative—6-foot median buffer with rumble strips and wider pavement markings—addresses both head-on and run-off-road crashes at a much lower cost than median barriers, which extends the project limits from 1.2 miles to 4.7 miles.

ACEC-NH award Project website Local news article

Two-Way to All-Way Stop Control

New Hampshire

When all-way stop control (AWSC) was applied as a systemic safety improvement in rural areas of New Hampshire, total crashes reduced by 71%; 90% in injury crashes, and 75% in fatal crashes.

NHDOT newsletter article Press release, Concord Press release, Salisbury Presentation, Chester

Safe Truck Mobility for North Dakota Winter Roads

North Dakota

North Dakota Highway Patrol and North Dakota DOT studied crash risk and travel disruption due to severe winter storms through a Safe System lens. They found several proactive opportunities for safe truck mobility during winter storm events.

Research Report Research Brief TRID Record

Get Involved with Transportation Research Board (TRB)

NCHRP and BTSCRP develop resources for DOTs, transportation professionals, and other agencies. Resources include research related to the AASHTO Highway Safety Manual and AASHTO Manual for Assessing Safety Hardware, safety guides for practitioners, and behavioral research. Transportation professionals may contribute problem statements, conduct research, and volunteer for project panels.

NCHRP BTSCRP TRIS

Public Outreach Efforts to Earn Local Support for Safety Countermeasures

Iowa

Iowa DOT uses a variety of public outreach efforts to garner local support for safety countermeasures, such as a video series, dynamic message signs, social media and blog posts, public meetings, informational materials, a speed feedback sign program, and a public awareness campaign.

Speed feedback sign program What Drives You campaign Roadside Chat blog