Purpose – The focus of this chapter is on state-of-the-art methodology for observational before–after evaluations. The purpose of such evaluations is to acquire information on the safety effects of site-specific treatments that could be used by road agencies for future interventions that may...

Organizations are reorganizing into collaborative subunits or teams in order to generate innovative ideas and stay ahead of the competition. Traditional control systems were established to direct employees and prevent control problems, such as fraud or theft, and were designed for vertically...