The 85th and the 15th percentiles are two parameters that are commonly used in traffic engineering and traffic safety. For example, 85th percentile speeds are used in setting speed limits and for … [Read more...] about Statistical Test for 85th and 15th Percentile Speeds with Asymptotic Distribution of Sample Quantiles
Regulation
How Fast? MDOT YouTube Video Explains Freeway Work Zone Speed Limits
The Michigan Department of Transportation (MDOT) has partnered with the Michigan State Police to produce a new safety video to help motorists understand speed limits in freeway work zones. "Where … [Read more...] about How Fast? MDOT YouTube Video Explains Freeway Work Zone Speed Limits
In the Work Zone: A Look Into the Safety of Speed Limits and Work Zone Devices Under MASH Testing
This webinar is part of the Mid-America Transportation Center (MATC) webinar series. MATC researchers Dr. Ronald Faller and Dr. Ghulam Bham feature their research and provide lessons learned about … [Read more...] about In the Work Zone: A Look Into the Safety of Speed Limits and Work Zone Devices Under MASH Testing
Driver Confused by Speed-Limit Laws
In this article, Dr. Gridlock addressed the question regarding 12 mph window over the limit as the enforced speed limit. The 12 mph buffer is restricted by a law in Maryland to limit the use of speed … [Read more...] about Driver Confused by Speed-Limit Laws
Your Stories Question: Speed Limits in Construction Zones
This article answers the question on why speed limit in construction zones is often reduced and why you have to obey the speed limit. … [Read more...] about Your Stories Question: Speed Limits in Construction Zones
Evaluation of Spatial and Temporal Speed Limit Compliance in Highway Work Zones
Typically, speed limits are reduced in work zones to safely accommodate construction activities and motorists on the roadway. This paper presents a methodology to evaluate the temporal and spatial … [Read more...] about Evaluation of Spatial and Temporal Speed Limit Compliance in Highway Work Zones