Assessing the effectiveness of speed limit reduction in Edmonton: A case study analysis.

This study evaluates the impact of reducing the default speed limit from 50 km/h to 40 km/h on traffic safety and drivers' behavior in Edmonton, Canada. The research comprehensively examines collision and speed data to assess the outcomes of the new speed limit. Collision data was analyzed across three distinct periods: pre-COVID (2017-2019), the COVID period (2019-2021), and the after-implementation period (August 2021 to July 2022).

Exploring the associations between winter maintenance operations, weather variables, surface condition, and road safety: A path analysis approach.

This paper aims to assess the effects of snow and ice control operations by investigating the interdependency between weather variables, maintenance operations, pavement friction, and collisions. Using a disaggregated event-based and location-specific framework, and employing the statistical techniques of Structural Equation Modeling and Path Analysis, all the significant direct and indirect effects of weather variables and maintenance operations on pavement friction and collision occurrence during snowstorms have been identified. It was revealed that precipitation, extremely low temperatures, and the potential of black ice formation all had significant negative direct effects on pavement friction and significant indirect negative effects on traffic safety.

Umbilical hernia in cirrhotic patients: outcome of elective repair.

Cirrhotic patients with umbilical hernia have an increased likelihood of complications following repair. The aim of this study was to assess the outcomes of elective umbilical hernia repair in cirrhotic patients. Fifty patients having uncomplicated umbilical hernia with a cirrhotic liver were studied prospectively.

Snake bite: clinical presentation, complication and outcome in relation to time of polyvalent snake antivenin in Yemen.

The snakebite envenoming is an important medical emergency. The envenoming is a complex medical emergency involving the site of the bite as well as multiple organ system. The symptoms and signs depend on the type and amount of venom injected, location of bite, victims' age, body size and general health conditions.