Final answer:
A motorist should be cautious in open country driving due to the natural terrain hazards, potential behavioral changes when believed to be observed, and the possible need for self-reliance in emergencies due to isolated conditions, as well as the usual driving concerns like possible criminal activities or encountering wildlife.
Explanation:
A motorist should be cautious in open country driving for several reasons. First, the presence of precipitous cliffs and torrents may lead to roads that are more narrow and winding than city roads, requiring careful navigation to avoid accidents. Additionally, rural areas might have quagmires or crevasses which are not often encountered in urban environments, and can be hazardous if a driver is unaware. Another concern is that open country may lack frequent rest places or services, like gas stations and repair shops, which means drivers need to plan their trips more carefully and be self-reliant in the case of emergencies.
Another aspect of caution is related to behavioral awareness. A driver should remain alert to the fact that their behavior might change if they believe they are being observed, such as by law enforcement. This can influence driving habits and increase the risk of accidents through over-cautious or distracted driving. Moreover, isolated roads may sometimes be used for illicit activities, such as smuggling or illegal immigration, and a driver may unexpectedly come across such activities or be mistaken for part of them. In remote areas, safety is also a concern due to the potential for encountering wildlife or stray livestock, which are not as common in urban settings.
Ultimately, being prepared is critical when driving in open country. This means having adequate supplies such as water, especially in areas like deserts where running out can be particularly dangerous due to extreme temperatures and the scarcity of water sources. Furthermore, in some cases, the road may be the only sign of civilization for miles, which can evoke a sense of being in an 'interminable' forest. Lastly, knowing that help may not be readily available can be daunting, so traveling in a group or with companions, much like how travelers in ancient times would wait to join a convoy for safety from bandits, is sometimes a safer approach.