Answer: Surface must be visible at all times, can't fly with
visibility less than 3 miles in day or 5 miles night within all operational limitations.
Explanation: A student pilot restrictions are special conditions placed on students who are still being trained to maintain safety and Prevent accidents. All student Pilot must follow this instructions for effective flying up till when he or she gets certifications needed.
These are some of the requirements before being allowed to fly solo;
Certificate endorsement,log book endorsement and student endorsement.