Mixed Method Approach to Develop a Framework for Adoption of Intelligent Speed-Assist Technology (ISAT)

Appleyard, Bruce S.; Honey, Megan; Cranford, Madison; Pande, Anurag; Salazar, Gianna; Machiani, Sahar Ghanipoor; Jahangiri, Arash; Baradaran, Nusheen

doi:10.21949/80jb-jb97

i

Mixed Method Approach to Develop a Framework for Adoption of Intelligent Speed-Assist Technology (ISAT)

2025-10-01
By Appleyard, Bruce S. ; Honey, Megan ; Cranford, Madison

File Language:

English

Details

Creators:

Appleyard, Bruce S. ; Honey, Megan ; Cranford, Madison ; Pande, Anurag ; Salazar, Gianna ; Machiani, Sahar Ghanipoor ; Jahangiri, Arash ; Baradaran, Nusheen
Corporate Creators:

Center for Pedestrian and Bicyclist Safety (CPBS) Tier-1 University Transportation Center (UTC)
Corporate Contributors:

United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology
Subject/TRT Terms:
Publication/ Report Number:

24SDSU01
DOI:

https://doi.org/10.21949/80jb-jb97
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Research Report (October 2025)
Corporate Publisher:

Center for Pedestrian and Bicyclist Safety (CPBS) Tier-1 University Transportation Center (UTC)
Description:

Speeding remains a leading contributor to roadway fatalities in the United States, playing a role in approximately one-third of all deaths on US roads. Vulnerable Road Users (VRUs), particularly pedestrians and cyclists, face disproportionate risks due to vehicle speed and design. Traditional methods of speed control, such as roadway design modifications and law enforcement, have notable limitations. This study analyzes speeding-related fatalities with a focus on understanding risks to VRUs and the potential for Intelligent Speed Assist Technology (ISAT) to mitigate these harms. Analysis of 2012-2022 federal Fatality Analysis Reporting System (FARS) data shows that 5.1% of all speeding-related fatalities involve pedestrians and cyclists. Most vehicles were traveling well above posted speed limits between 20 and 40 mph, the average speed in pedestrian deaths on 25 mph roads being 122% over the limit. Heavier vehicles such as SUVs are also overrepresented in fatal crashes. This report evaluates the cost-effectiveness of ISAT at various levels of implementation. At 90-100% effectiveness, ISAT could prevent over 95,000 deaths and generate up to $1.5 trillion in societal benefits. Additional interventions, including speed cameras, design changes, and dynamic speed limits, are also reviewed as essential complements to ISAT in advancing traffic safety goals.
Format:

PDF
Funding:

69A3552348336
Download URL:

https://rosap.ntl.bts.gov/view/dot/93987/dot_93987_DS1.pdf
File Type:

[PDF - 3.36 MB]
Collection(s):

University Transportation Centers
Main Document Checksum:

urn:sha-512:048a034978ce82f6ddd8b97bab32ef06950cacde227d3a7cb955312d3803b7d73eb1825a8b7241f1ad51386636025a60a61c3a5b352905510b0e082448151bd0

File Language:

English

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