60.3. At which traffic signal is the signal permitting the tram to move straight ahead illuminated?
UAНа якому світлофорі горить сигнал, що дозволяє трамваю рух прямо?
This exam question from the Traffic Rules of Ukraine tests the understanding of traffic signals for rail transport and the safe passage through intersections. In real situations, a tram follows separate signals, and a mistake in “reading” them leads to conflicts with other road users, especially at complex intersections with multiple directions.
The topic belongs to the section of the Traffic Rules regarding traffic light signals, specifically to clause 8.7.5 of the Traffic Rules of Ukraine concerning white-moon tram traffic lights. The key rule for the theoretical exam: tram movement is allowed only when the lower white-moon signal and one or more upper signals are lit simultaneously, where the middle upper one indicates permission to move straight ahead. Accordingly, if on each of the given traffic lights the lower signal and the middle upper one are lit at the same time (even if the left and/or right ones are also lit), then all of them allow the tram to move straight.
That is why options that limit the list to only some of the traffic lights are incorrect: they ignore that on the remaining traffic lights the condition “lower + middle upper” is also met. Such tasks in the theoretical exam format teach not to confuse tram white-moon signals with regular vehicle traffic lights and to correctly determine the permitted directions of movement according to clause 8.7.5 of the traffic rules.
Clause 8.7.5
Traffic lights with white-moon signals are used to regulate tram movement. Tram movement is permitted only when the lower white-moon signal and one or more of the upper white-moon signals are illuminated simultaneously, with the following meanings: the left upper signal permits a left turn, the middle upper signal permits movement straight ahead, and the right upper signal permits a right turn. If the lower signal and the corresponding upper signal are not illuminated at the same time, tram movement is prohibited.
Explanation of application: for a tram to be allowed to move straight ahead, the lower white-moon signal and the middle upper white-moon signal must be illuminated (or the lower one together with several upper ones, among which is the middle one).
That is, the correct answer is "At traffic lights 1, 2, 3, and 4.", considering that according to the definition of the Traffic Rules, tram movement straight ahead is permitted in all cases where the lower white-moon signal and the middle upper white-moon signal are illuminated simultaneously (regardless of whether the left and/or right upper signals are also illuminated).
In this task, you need to correctly read the tram traffic light. For trams, there is a separate rule from section 8.7.5 of the Traffic Rules of Ukraine: movement is allowed only when the lower signal is on simultaneously with one or more of the upper signals.
Next, it is important to note that the upper signals indicate the direction of permitted movement: the left one corresponds to a left turn, the middle one to straight movement, and the right one to a right turn. That is, for a tram to be allowed to go straight, both the lower signal and the middle upper signal must be lit at the same time. At the same time, it is permissible for other upper signals to be lit together with the middle one—this simply means that more than one direction is allowed.
If on each of the given traffic lights 1, 2, 3, and 4 the lower signal and the middle upper signal are on (regardless of whether the left or right upper signals are also lit), then none of these traffic lights prohibit the tram from moving straight. In all cases, the condition of section 8.7.5 for straight movement is met.
Therefore, the correct answer is "At traffic lights 1, 2, 3, and 4," since on each of them both the lower signal and the middle upper signal are lit at the same time, which according to section 8.7.5 allows the tram to move straight.