The California Department of Transportation, commonly known as Caltrans, is a state agency responsible for maintaining and improving California's transportation system. This includes overseeing the construction and maintenance of highways, bridges, and public transit systems. Caltrans aims to ensure safe and efficient travel for all residents and visitors in the state. In addition to road maintenance, Caltrans also focuses on environmental sustainability and reducing traffic congestion. The agency implements various programs to promote public transportation, biking, and walking, while also working on projects that enhance the safety and accessibility of transportation infrastructure for everyone.