At a train station, there are three platforms: one for northbound trains, one for southbound trains, and one for eastbound trains. Each platform has a different colored sign: red for northbound, blue for southbound, and green for eastbound. During maintenance work, the signs get accidentally switched around by the workers. When passengers arrive at the station, where do they think each train is departing from based on the colors of the signs, and where are the trains actually departing from? Respond briefly.
If the signs have been switched around during maintenance, passengers will believe that trains are departing from platforms according to the colors of the switched signs, not their original destinations. Without knowing the exact configuration of the switch, we can only speak in general terms. If a passenger sees a red sign, they will think they are at the northbound platform, but because of the switch, the train departing from there could actually be heading south or east. Similarly, a blue sign would suggest to a passenger that they are at the southbound platform, while the train might be going north or east, and a green sign would suggest an eastbound platform, even though the train might be going north or south.

The actual departure direction of each train will still be from the platform it is originally assigned to. That is, the northbound trains will still leave from their designated northbound platform, southbound from the southbound platform, and eastbound from the eastbound platform. Passengers might end up on the wrong platform and potentially board the wrong train if they rely solely on the sign colors without confirming with station personnel or announcements that might clarify the correct platform assignments during the period of maintenance confusion.