Maximum posted speed limits - IIHS-HLDI
2019年11月1日 · Footnote 5 2013 New Hampshire House Bill 146 raised the speed limit from 65 to 70 mph on the portion of I-93 from mile marker 45 to the Vermont border. ↩. Footnote 6 In Oklahoma, a speed limit of 80 mph may be posted on portions of the turnpike if approved by the Oklahoma Turnpike Authority, effective November 1, 2019. The State Highway ...
Speed - IIHS-HLDI
Speed limit laws, which date to 1901, traditionally have been the responsibility of the states, but the national maximum speed limit in place in the 1970s and 1980s effectively established maximum speed limits of 55 mph everywhere in the country. Since its complete repeal in 1995, speed limits have trended up.
speed limits, after accounting for general time trends, unemployment, the percentage of young drivers, and alcohol sales. Each 5 mph increase in the maximum speed limit was associated with an 8% increase in fatality rates on interstates and freeways and a 4% increase on other roads. The trend toward increased speed limits has continued since 2013.
New crash tests show modest speed increases can have deadly …
2021年1月28日 · With posted speed limits increasing on roadways around the country, a vehicle’s ability to protect drivers in crashes is in doubt. Small speed increases can have huge effects on crash outcomes, as shown in new crash tests by the AAA Foundation for Traffic Safety, the Insurance Institute for Highway Safety (IIHS) and Humanetics.
Speed limit increases are tied to 37,000 deaths over 25 years - IIHS …
2019年4月4日 · Maximum speed limits are set by the states, and they have been rising since the mid-1990s. Proponents of raising the speed limit often argue that such increases simply bring the law in line with reality, since most drivers exceed the limit. Once the limit is raised, however, drivers go even faster.
With the right mindset, speed-limiting technology can be liberating
2024年8月13日 · The aftermarket device that I tested determined the speed limit solely by GPS connected to a speed limit map. Provided by Sturdy and installed on a 2023 Hyundai Tucson, it worked a little like cruise control, only in reverse. When it kicked in, I could still press the accelerator, but the vehicle’s speed wouldn’t increase.
Lowering speed limits makes Seattle streets safer - IIHS-HLDI
2023年3月28日 · At the same time, new 25 mph speed limit signs were installed on arterial roads within the downtown area. Most arterials outside the city center had higher posted speed limits, and these mostly remained in effect until 2018, when Seattle began installing new signs on more arterials outside the downtown.
Effects of lowering speed limits on crash severity in Seattle - IIHS …
Outside the downtown, new speed limit signs were installed on some arterials starting in 2018. The study evaluated effects of the speed limit reduction on crash severity in Seattle. Method: Police-reported crashes in Seattle and three control cities in Washington before and after the speed limit change were examined.
Lowering the speed limit from 30 to 25 mph in Boston: effects on ...
Separate logistic regression models estimated changes in the odds of vehicles exceeding 25 mph, 30 mph, and 35 mph associated with the lower speed limit. Results: The speed limit reduction was associated with a 0.3% reduction in mean speeds (p=0.065), and reductions of 2.9%, 8.5%, and 29.3% in the odds of vehicles exceeding 25 mph, 30 mph, and ...
Most drivers would be OK with anti-speeding tech in vehicles, …
2024年6月12日 · The little icon with the local speed limit that pops up in the corner of the Apple Maps, Google Maps and Waze apps is a simple version. (Waze and some other less well-known apps also offer additional ISA functions.) More robust ISA systems sound a warning or flash an alert when the driver exceeds the limit — or when they exceed it by more ...