33.1.35. The depicted road sign is installed before:
UAЗображений дорожній знак встановлюється перед:
This is an exam question from the Traffic Rules of Ukraine about warning road signs and traffic safety in conditions of reduced road capacity. Such signs are important in practice because they give the driver time to prepare for a change in the road situation, reduce speed, increase following distance, and, if necessary, choose an alternative route in advance to avoid sudden slowdowns or temporary traffic stoppages.
The question tests knowledge of Section 33 of the Traffic Rules, specifically Group 1 "Warning signs" (points 33.1 and 33.1.38), and understanding of the terms "carriageway" and "traffic jam." The essence is that sign 1.38 "Traffic jam" is installed in advance before a place where a narrowing of the carriageway typically causes traffic congestion: a traffic jam is a non-permanent phenomenon and depends on the time of day, day of the week, or load, so the sign warns of a possible danger ahead, not a "permanent" characteristic of the road.
The analysis of answer options in this task comes down to cause-and-effect relationships. The option about roadworks is not accurate, because the fact of roadworks is indicated by other warning signs; sign 1.38 is used when the consequence of narrowing (including due to works) results in traffic jams. The option about heavy traffic is incorrect, as a "large flow" by itself is not a reason to install this sign without a specific cause such as narrowing. The option about multi-lane traffic also does not correspond to the meaning of the sign, since the number of lanes is not its message; the key signal for the driver, both for the theoretical exam and in real traffic, is the possible traffic jam specifically due to reduced capacity at a narrowing section.
Clause 33.1 — 33 "Road Signs", 1 "Warning Signs"
Warning signs inform drivers about approaching a dangerous section of the road and the nature of the possible danger. Warning signs are installed in advance (as a rule, outside populated areas — 150–300 m, in populated areas — 50–100 m before the dangerous section), so that the driver has time to take safety measures.
Application to the question: it checks the understanding that the sign does not indicate a "permanent" characteristic of the road, but warns of a possible danger ahead (in this case — a possible traffic jam due to narrowing).
Clause 33.1.38 — 33 "Road Signs", 1 "Warning Signs", sign 1.38 "Traffic Jam"
Sign 1.38 "Traffic Jam" is installed before a section of the road where the narrowing of the carriageway causes traffic jams.
Application to the question: this description specifically determines the correct answer option — the sign warns of a traffic jam caused by the narrowing of the carriageway.
Clause 1.10 (term "Carriageway")
Carriageway — an element of the road intended for the movement of non-rail vehicles.
Application to the question: the wording of sign 1.38 directly uses the concept of "carriageway", the narrowing of which is the cause of the traffic jam.
Clause 1.10 (term "Traffic Jam")
Traffic jam — an accumulation of vehicles on the road that makes it impossible to move at a speed appropriate to the road conditions or causes a temporary stop of movement.
Application to the question: sign 1.38 warns precisely about such an accumulation/complication of traffic ahead.
That is, the correct answer is "A section of the road where the narrowing of the carriageway causes traffic jams.", given that according to the definition of the Traffic Rules, sign 1.38 "Traffic Jam" is installed precisely before a section where a traffic jam occurs due to the narrowing of the carriageway.
Sign 1.38 in section 33 of the Traffic Rules of Ukraine belongs to the warning signs. It is installed in advance so that the driver is informed about a possible problem ahead and can choose a safe and appropriate driving strategy or, if necessary, change the route.
The meaning of this sign is precisely that a section is expected ahead where, due to a narrowing of the carriageway, the road's capacity decreases. When there are fewer lanes or passage becomes more difficult, traffic flows "compress," speed drops, and there is a high probability of a traffic jam forming. That is, the reason here is not just heavy traffic, but a specific narrowing that causes vehicles to accumulate.
It is important to understand that a traffic jam is a variable phenomenon: it can occur at certain peak hours, on specific days, or under certain conditions. That is why the driver is warned about a place where, due to the narrowing of the carriageway, traffic jams typically occur, so that they do not expect normal driving speed on this section.
If the narrowing is related to road works, the very fact of the works is indicated by the appropriate signs. But when such narrowing often results in traffic jams, an additional warning with sign 1.38 is practical: the driver is prepared in advance for slowing down and possible congestion.
Therefore, the correct answer is "A section of road where the narrowing of the carriageway causes traffic jams.", since sign 1.38 according to the Traffic Rules warns of a probable traffic jam that arises precisely due to the reduced capacity of the road at the narrowing.