Question

Which best describes a development that improved railroad safety?

Answer 1

Answer: Companies replaced hand-operated brakes with air brakes on trains.

Explanation: right on edge

Answer 2

The statement that best describes a development that improved railroad safety is that companies replaced hand-operated brakes with air brakes on trains.
This was an extremely important change when it comes to railroad safety given that it has prevented many casualties and fatalities that may have occurred if the drivers were still using hand-operated brakes.