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Question:
Active railroad control systems warn drivers of the approach of a train. They employ some combination of signs, signals, lift gates, and bells or other audible warnings. Stop when the bell is ringing and the lights are flashing. Never attempt to go past until the train has passed and the warnings have ceased.
Comments
EdgarCeja26
5 years ago
Great app
Myles Blake High School
5 years ago
I only got 2 questions wrong
Tim de Bear
5 years ago
In the midst of finishing up learning on the older app, it told me to download this newer version. However, I didn’t want to have to go through all those questions again, so I simply finished reviewing on the old app and took the practice test on this newer app. Upon completion of the tests, it would not let me move forward or see my score! How should I know if I have done well enough to pass if I cannot see my own score?