Simplify the following text for a Grade 11 native English-speaking person.
Original: The strength and reliability of metals has led to their widespread use in construction of buildings and other structures , as well as in most vehicles , many appliances and tools , pipes , road signs and railroad tracks .
Simplified: The strength and reliability of metals has led to their widespread use in making of buildings and other things , as well as in most vehicles , many tools , pipes , road signs and railroad tracks .