Final answer:
The law of Oklahoma allows driving at a speed of 60 miles per hour on four-lane divided highways and two-lane superhighways, unless otherwise posted.
Step-by-step explanation:
The law of Oklahoma states that, unless otherwise posted and under normal conditions, you may drive at a speed of 60 miles per hour on four-lane divided highways and two-lane superhighways.
It is important to note that speed limits may vary in different locations and circumstances, so it's essential to always follow the posted speed limit signs and adjust your speed based on road and weather conditions.
Remember to prioritize safety and abide by the specified speed limits to ensure a safe driving experience.