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Compressed Gas Safety This course reviews the hazards associated with compressed gases and the cylinders used to store them – both chemical and physical, and presents a framework for identifying risk. Worker responsibilities are presented along with safety measures to protect them from injury. It emphasizes hazard identification and safe work practices that apply to... Learn More

Fly Ash in Highway Construction Coal fly ash is a coal combustion product that has numerous applications in highway construction. It has been used in roadways and interstate highways since the early 1950s. In 1974, the Federal Highway Administration urged states to allow partial substitution of fly ash for cement whenever feasible. Additionally, in 1983... Learn More

Best Practices for Road Weather Management On average, there are over 6,301,000 vehicle crashes each year, and 24 percent are weather-related, resulting in 7,130 fatalities and 629,000 injuries. In spite of these statistics, there is a perception that transportation managers can do little about weather. However, three types of mitigation measures may be employed in... Learn More

Groundwater Investigations This course presents the general state of the practice of groundwater investigations and focuses on the scope and specific elements of typical geotechnical investigation programs for design and construction of highways and related transportation facilities. It presents the latest methodologies in the planning, execution, and interpretation of the various exploratory investigation methods, and... Learn More

Subsurface Drilling and Sampling This course provides an overview of the equipment and procedures commonly used for the drilling and sampling of soil and rock as part of a geotechnical site investigation. The methods addressed in this course are used to retrieve soil samples and rock cores for visual examination and laboratory testing. The planning,... Learn More