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
Periods of the Day
Safety Evaluation of Sequential Warning Lights in Tapers at Nighttime Work Zones
Safety improvement at nighttime work zones is important because of visibility concerns after dark. The deployment of sequential lights is an innovative method to improve driver recognition of lane … [Read more...] about Safety Evaluation of Sequential Warning Lights in Tapers at Nighttime Work Zones
Cost-Benefit Analysis of Sequential Warning Lights in Nighttime Work Zone Tapers
Improving safety at nighttime work zones is important because of the extra visibility concerns. The deployment of sequential lights is an innovative method for improving driver recognition of lane … [Read more...] about Cost-Benefit Analysis of Sequential Warning Lights in Nighttime Work Zone Tapers
New Approach to Compare Glare and Light Characteristics of Conventional and Balloon Lighting Systems
With the increasing needs to adopt nighttime construction strategies in order to avoid disruption of traffic flow, state agencies are currently experimenting with a new class of light towers known as … [Read more...] about New Approach to Compare Glare and Light Characteristics of Conventional and Balloon Lighting Systems
Glare and Light Characteristics of Conventional and Balloon Lighting Systems
With the increasing needs to adopt nighttime construction strategies in order to avoid disruption of traffic flow, state agencies are currently experimenting with a new class of light towers known as … [Read more...] about Glare and Light Characteristics of Conventional and Balloon Lighting Systems
Guidelines on Use of Exposure Control Measures
Guidelines on Use of Exposure Control Measures summarizes the various types of exposure control measures and discusses how each can improve the safety of workers and motorists in work zones. The … [Read more...] about Guidelines on Use of Exposure Control Measures