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Speeding has contributed to thousands of fatalities in the Unites States annually for decades, despite long-standing awareness of its risks. Intelligence speed assistance (ISA) is a technology designed for speed limit compliance that has been shown to reduce speeding, and European law has mandated ISA for all new vehicles sold from July 2024. The United […]
In 49 Code of Federal Regulations Part 236, restricted speed is defined as a speed that permits stopping within one-half the range of vision, but does not exceed 20 mph. While previous studies have focused extensively on the safety risks associated with high-frequency, high-consequence accidents, comparatively little prior work has been undertaken to evaluate railroad […]
The AAA Foundation for Traffic Safety has been examining topics related to posted speed limits and speeding since 2017 and has published several documents thus far that described practices for setting posted speed limits in the U.S.; the impact of speed increases on driver safety from vehicle crash tests; and traffic fatalities in relation to […]
Previous studies have shown that the optimal speed trajectories for vehicles with different engine types (e.g., gasoline versus electric vehicles) are very different under certain conditions. This study aims to solve this issue by developing a general speed control algorithm that calculates a compromised solution across different vehicle engine types while optimizing the entire mixed […]