Approximately how many motorists does the Share the Road program reach annually?

The Share the Road program is designed to promote safety and awareness among both motorists and commercial drivers, particularly regarding interactions with large trucks. The program's extensive outreach efforts include educational campaigns, community events, partnerships with various organizations, and the dissemination of materials over multiple platforms, which is why it reaches millions of motorists each year.

The aim of the program is to foster a culture of mutual respect and understanding on the roads, emphasizing the importance of safe driving practices. Given its comprehensive approach and the wide array of educational tools available, it effectively engages a vast audience, reaching millions rather than just thousands or hundreds. The choice of "billion" significantly overstates the impact, as while the program is influential, it does not reach that scale in terms of individual motorists annually. Thus, the correct answer reflects the extensive reach of the program and its goal of enhancing road safety for everyone.