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Study Shows Lower Speed Limits Lead to Less Speeding

September 04, 2018

ATLANTA, GA. – August 28, 2018 ( According to an online article from, a new study by the Insurance Institute for Highway Safety (IIHS) indicates that lower posted speed limits can reduce instances of speeding.*

On August 28, at the Governors Highway Safety Association 2018 Annual Meeting in Atlanta, Georgia, IIHS presented the findings from a recent speed limit study. Beginning in January 2017, unless otherwise posted, the City of Boston lowered its default speed limits on all streets from 30 mph to 25 mph. The city alerted the public to the change leading up to its enforcement via traditional advertisements and social media posts. 

Compared to prior Boston data and data from Providence, Rhode Island (a control site that did not change its speed limits), drivers in Boston were nearly 30 percent less likely to exceed posted speed limits by 10 mph or more when the limit changed from 30 mph to 25 mph. In addition, after the speed limit change, drivers in Boston were 8.5 percent less likely to exceed the speed limit by 5 mph and 2.9 percent less likely to exceed the speed limit at all. 

These findings suggest that drivers are less likely to speed when posted speed limits are lower. The next phase of the study will determine whether a reduction in speeding leads to a reduction in traffic accidents and traffic-related deaths. It is known already, however, that speeding is a factor in numerous accidents and fatalities in the United States every year. Speeding-related accidents account for about 25 percent of all crash deaths in the United States, a rate that has sustained for more than three decades. 

Accident News is an archive of select Georgia accidents, designed to alert and educate drivers, to help them avoid the most common causes of injuries.  If you or a family member are injured in an accident, call Montlick & Associates 24/7 for your free consultation at 1-800-LAW-NEED (1-800-529-6333) or use our live chat at  For more information about Montlick & Associates’ award-winning public service programs click here.  

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* This blog is intended to provide the public with news concerning serious automobile accidents and related stories. Although we are receiving this information from news organizations, initial reports may be different from conclusions reached by law enforcement personnel and other organizations, upon further investigation. Therefore, the accuracy of the content is not guaranteed. The information published here is based on information that has already been reported by a news organization, or other sources, and we cannot and do not assume responsibility for its accuracy. The source that we utilized at the time is provided above. If this posting pertains to you or your family and you do not wish for it to be on our website, please email us at [email protected] and we will be happy to remove it, but when doing so, please include a link to the the article that you wish to be taken down.

Category: Accident News

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