Final answer:
A factor associated with a risk of using high-speed trains to replace older rail systems for transporting people between large cities is the greater need for rail maintenance for safety. Increased use of electrical power for the trains is another factor.
Step-by-step explanation:
A factor associated with a risk of using high-speed trains to replace older rail systems for transporting people between large cities is the greater need for rail maintenance for safety. With increasing populations and larger numbers of riders, the rail infrastructure would require more frequent and comprehensive maintenance to ensure safe operations. This includes regular inspections, repairs, and upgrades to prevent accidents and ensure passenger safety.
For example, high-speed trains can place more stress on the tracks and require stricter maintenance schedules to detect any potential issues and prevent derailments. Additionally, the increased speed and frequency of trains can lead to higher wear and tear on the rails, requiring more maintenance and replacement.
Increased use of electrical power for the trains is another factor associated with the risk of this system. High-speed trains rely on electrical power to operate, and the demand for power increases as the number of trains and passengers is higher. This poses challenges in terms of adequate power supply, potential strain on the electrical grid, and the need for sustainable energy sources.
Learn more about risks associated with using high-speed trains