33.5.51. The depicted road sign informs:
UAЗображений дорожній знак інформує:
This exam question from the Traffic Rules of Ukraine concerns road safety in situations where lane organization changes, when traffic streams merge and the carriageway narrows. Understanding such informational and directional signs directly affects a driver's ability to assess the road situation in advance, plan maneuvers, and avoid creating obstacles for other road users, which is especially important on high-speed roads and when entering/exiting interchanges.
The question tests knowledge of Section 33 of the Traffic Rules, specifically group 5 "Informational and Directional Signs" and the meaning of sign 5.21.1 "End of Additional Lane or Acceleration Lane." In the theoretical exam, it is important to distinguish: the option about "the presence of an acceleration lane" describes the beginning/presence of such a lane, not its end; the option about "an adjacent lane to the right for traffic in the same direction" corresponds to a situation where a lane is being added (when the road becomes wider), not narrowing. Instead, the correct meaning of sign 5.21.1 directly indicates that the right lane ahead is ending (this may be either an additional lane or an acceleration lane), and the carriageway will narrow on the right in the direction of travel.
The practical significance of this knowledge for learning and passing exam questions lies in the correct tactics: a driver traveling on the right must prepare in advance for a safe lane change into the adjacent lane, controlling gaps and yielding priority according to the traffic rules. This reduces the risk of conflicts during traffic stream "merging" and helps confidently answer theoretical exam tasks related to traffic lanes and acceleration lanes (terms from paragraph 1.10 of the Traffic Rules of Ukraine).
Clause 33.5 — 33 "Road Signs", 5 "Informational and Directional Signs", sign 5.21.1 "End of Additional Lane or Acceleration Lane"
Sign 5.21.1 informs about the end of an additional lane or acceleration lane on the right side (that is, about the narrowing of the carriageway on the right in the direction of travel).
Practical application: the driver understands in advance that the right lane (additional or acceleration lane) is ending, and accordingly plans safe lane changing/merging into the adjacent lane.
Clause 1.10 (term "Traffic Lane")
Traffic lane — a longitudinal strip on the carriageway at least 2.75 m wide, marked or unmarked with road markings, intended for the movement of non-rail vehicles.
Clause 1.10 (term "Acceleration Lane")
Acceleration lane — a lane on the carriageway intended for accelerating vehicles in order to enter the road.
That is, the correct answer is "About the end of an additional lane or acceleration lane on the right," given that according to the definition in the Traffic Rules, sign 5.21.1 directly indicates the termination (end) of the additional lane/acceleration lane on the right and the corresponding narrowing of the carriageway.
Road sign 5.21.1 from section 33 of the Traffic Rules of Ukraine belongs to the informational and indicative signs and warns the driver about a change in the traffic arrangement ahead. Its meaning is that one of the lanes on the right side of the carriageway will soon disappear, which previously existed on the preceding section.
In practice, this means a narrowing of the road from the right: either an additional lane that was organized on the right (for example, on an ascent or on a busy section) ends, or an acceleration lane used for merging into the general flow after an exit/entry comes to an end. In any of these cases, the right lane "merges" into the main one, and the number of lanes in your direction decreases.
Therefore, it is important for the driver to assess the situation in advance: if driving in the right lane, it is necessary to prepare to change to the left, doing so safely and taking into account the traffic situation. The sign itself does not indicate any prohibition or speed limit, but specifically informs about the end of the lane on the right and the corresponding change in the width of the carriageway.
Thus, the correct answer is "About the end of an additional lane or acceleration lane on the right," since sign 5.21.1 indicates that the right lane ahead is ending and there will be a narrowing of the carriageway from the right side.