Back to AASHTO

Safety Highlights

Explore relevant case studies by filtering via agency, keyword, or pre-set filters in the left menu, or by using the topic tags located at the bottom of the page.

Crash Testing of Electric Vehicles into W-Beam Guardrail and Roadside Barriers

Nebraska
Crash testing of electric vehicles (EVs) into W-beam guardrails revealed concerns about the compatibility of EVs with existing barriers due to increased weight from batteries. In the first test, a Tesla Model 3 penetrated under the guardrail, and in the second test, a Rivian R1T ruptured the guardrail and penetrated through the barrier.
University of Nebraska-Lincoln ArticleLocal News ArticleUniversity of Nebraska-Lincoln Video2024 Safety Summit Poster: W-Beam Guardrail2024 Safety Summit Poster: Roadside Barriers

New Jersey’s Systemic Approach to Safety

New Jersey
NJDOT's Systemic Approach to Safety focuses on proactively addressing crash risk by widely implementing low-cost, proven effective countermeasures throughout a roadway network. The systemic approach considers elements not typically identified through traditional approaches.
2024 Safety Summit Poster

The Safe System Approach in New Jersey

New Jersey
NJDOT has integrated the six principles and five elements of the Safe System Approach (SSA) into its programs, practices, and projects, aiming to achieve zero fatalities and serious injuries on all public roads.
Presentation Slides2024 Safety Summit Poster

Turning Road Safety Audits into Projects

New Jersey
NJDOT noted a 10-16% reduction in total crashes due to implementations from road safety audits. Over 25 road safety audits RSAs have been conducted on state, county, and municipal roadways under HSIP.
2024 Safety Summit Poster

Using Before and After Tools to Make Data Driven Safety Decisions

New Jersey
As part of the HSIP, NJDOT uses observational before/after analyses with a volume adjustment tool to evaluate countermeasure effectiveness and safety benefits. For example, post-deployment evaluation of centerline rumble strips showed a total crash cost benefit of more than $11 million for all target crashes.
2024 Safety Summit Poster

Wrong-Way Driver Action Plan

New Hampshire
The NHDOT Wrong-Way Driver Action Plan aims to address the increasing threat of wrong-way drivers by identifying risk factors and guiding systemic deployment of countermeasures.
Local News Article2024 Safety Summit Poster

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 ArticlePress Release, ConcordPress Release, SalisburyPresentation, Chester2024 Safety Summit Poster
Safety Highlights Tags
Access mgt. B/C analysis Behavior Connected & autonomous vehicles Construction Context Design Electric vehicles Emergency response Employee safety Equity evaluation Health HSIP Innovation Intersections Land use Lane departure Law enforcement Leadership Maintenance Motor carriers Operations Outreach & education Performance management Performance measurement Planning Post-crash care Project development Public engagement Quick build Risk management Road safety audits Roadway departure Safety cameras Safety planning Systemic approach Technology Traffic incident management Training Transit Tribal safety Vulnerable road users Weather Wrong-way driving