In which situation can snowmobiles drive on public roads?

Snowmobiles are permitted to drive on public roads primarily when crossing them. This allowance is in place to ensure safety and proper traffic management. When a snowmobiler approaches a public road, they must do so with caution and only cross at designated points or areas that are safe to traverse. This practice minimizes the risks associated with mixing snowmobiles and regular vehicular traffic, as roads are primarily designed for motor vehicles, not for snowmobiles.

Other options illustrate scenarios that do not align with the established regulations regarding snowmobile use on public roads. For instance, driving "whenever they want" could lead to dangerous situations due to the differing speeds and sizes of vehicles on public roads. Dropping off passengers is not a recognized reason for using public roadways with a snowmobile, as it would pose safety hazards and logistical challenges. Lastly, while emergencies necessitate certain deviations from standard rules, snowmobiling on public roads in non-emergency situations is strictly regulated to maintain safety for all road users.