20.23. What is the general alarm sound signal at railway level crossings?
UAЩо є звуковим сигналом загальної тривоги на залізничних переїздах?
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This exam question from the Traffic Rules of Ukraine concerns safety at railway crossings and the driver's actions in case of sudden danger. Any delay at a crossing can have critical consequences, so the traffic rules provide for a clear, recognizable audible signal that cannot be confused with the ordinary warning use of the horn.
The question tests knowledge of the section of the traffic rules regarding movement across railway crossings, specifically the requirements of point 20.9. This very point defines what the sequence of general alarm signals should be: a standardized combination of one long and three short audible signals from the vehicle. In the theoretical exam, it is important not only to recognize the term but also to remember the order of the signals, as it is established by the Rules.
The analysis of the answer options comes down to the fact that only the one that exactly reproduces the norm of point 20.9 is correct: one long and three short. Other combinations (three long and one short, or two long and three short) are not provided for by the Traffic Rules of Ukraine, so in the context of this exam question, they are incorrect, even if they "sound" similar.
The practical purpose of such a signal is to attract the attention of everyone near the crossing when a vehicle cannot quickly clear the tracks: after the series, a pause is made and, if necessary, repeated. Understanding this algorithm helps during training and taking the theoretical exam, and in a real situation can provide extra seconds to react and prevent a collision.
Clause 20.9
The signal to stop a train (locomotive, railcar) is a circular motion of the hand (in daylight — with a piece of bright fabric or any clearly visible object, at night or in conditions of poor visibility — with a torch or lantern). The general alarm signal consists of a series of audible signals from the vehicle, consisting of one long and three short signals.
This clause directly defines what is considered the general alarm audible signal at a railway crossing and in what sequence it is given.
Clause 1.10 (term "Railway crossing")
Railway crossing — an intersection of a road with railway tracks at the same level.
This term clarifies which specific object is referred to in the question (a railway crossing as the place where a road and tracks intersect at the same level).
Therefore, the correct answer is "A series of signals consisting of one long and three short signals," given that according to the Traffic Rules, the general alarm signal at railway crossings is exactly such a series of audible signals from a vehicle (clause 20.9).
A railway crossing is a place where a road intersects with railway tracks at the same level. Any delay or obstruction at such a section creates an especially high risk, so the Rules provide clear and recognizable signals to warn of danger.
Clause 20.9 of the Traffic Rules of Ukraine establishes a special sound signal specifically for situations of general alarm at a crossing. Its purpose is that other road users nearby immediately understand that a dangerous situation has arisen at the crossing and that they need to react (stop, assess the situation, and, if possible, help remove the obstacle).
This signal is not given "arbitrarily," but in a strictly defined sequence so that it cannot be confused with an ordinary short warning signal in the city. In practice, it looks like this: for example, if a driver is forced to stop at a crossing and cannot quickly clear the tracks on their own, they give one long sound signal, then three short ones, pause, and repeat if necessary.
Therefore, the correct answer is "A series of signals consisting of one long and three short signals," since clause 20.9 of the Traffic Rules defines exactly this sequence as the general alarm sound signal at railway crossings.