Why is it important to bring a backup map when using a GPS?

Bringing a backup map when using a GPS is essential primarily because GPS devices can fail in extreme cold. In snowy or frigid environments, which are common conditions for snowmobiling, the technology within GPS devices may become less reliable due to battery limitations or issues with the device's components. If the GPS malfunctions or the battery dies, having a physical map allows the user to navigate and ensure they do not become lost.

While factors like the weight of a GPS device and the need for frequent updates can impact usage, they do not directly address the immediate risks posed in challenging weather conditions. A backup map serves as a crucial safety tool, ensuring that riders maintain their sense of direction even in situations where electronic devices might fail, helping to enhance overall safety in potentially harsh environments.