At-grade intersection: Quiz

Question 1: An example of this is the railroad grade crossing (American English) or ________ (British English) where roads cross railways at grade.
Level crossingNarrow gauge railwayBeijingRussia

Question 2: Examples are intersection (roads), level junction (________) and railroad crossing (both).
TrainTransportTrain stationRail transport

Question 3: With areas of high or fast traffic, an at-grade intersection normally requires a traffic control device such as a stop sign, traffic light or ________ to manage conflicting traffic.
Pulse code cab signalingRailway semaphore signalNorth American railroad signalsRailway signal

Source: The Full Wiki (