The BIKE Act of 2024 allows states to use federal highway safety grant funds to pay for bicycle education programs in elementary and secondary schools. The bill directs the U.S. Department of Transportation to update its safety guidelines within one year to encourage on-bicycle training that teaches students proper cycling skills, traffic rules, road navigation, and the importance of wearing helmets. The Department must work with education experts to develop new curriculum and materials, then share these guidelines with state education agencies. Within three years, the Department must report to Congress on how states are using these programs and funds, including any challenges or successes they have experienced. The legislation affects students, schools, and state transportation agencies that administer federal safety grants.