A Tobit model for analyzing speed limit compliance in work zones

Evaluation of Variable Advisory Speed Limits in Congested Work Zones

Speed Compliance in Freeway Variable Speed Limit System – Case Study of the Prague City Ring

Many previous studies have confirmed the strong relationship between speed compliance and the frequency and severity of traffic accidents. Variable speed limit (VSL) system as a measure to improve traffic safety enables the freeway system to change its posted speed limit based on various traffic and environmental conditions. Such system helps drivers to recognize the upcoming events, to adjust ...

A Clinician’s Tool for Analyzing Non-compliance

We describe a computer program to assist a clinician with assessing the efficacy of treatments in experimental studies for which treatment assignment is random but subject compliance is imperfect. The major difficulty in such studies is that treatment efficacy is not “identifiable”, that is, it cannot be estimated from the data, even when the number of subjects is infinite, unless additional kn...

A Clinician's Tool for Analyzing Non-Compliance

We describe a computer program to assist a clinician with assessing the e cacy of treatments in experimental studies for which treatment assignment is random but subject compliance is imperfect. The major di culty in such studies is that treatment e cacy is not \identi able", that is, it cannot be estimated from the data, even when the number of subjects is in nite, unless additional knowledge ...

Study on different solutions to reduce the dynamic impacts in transition zones for high-speed rail

One of the most important factors influencing the track maintenance is the transitions between parts of the track with different vertical stiffness. The dynamic...