35.86. If there is an oncoming vehicle in your lane, is it permitted to use the audible warning device in a populated area?
UAЯкщо на вашій смузі є зустрічний транспортний засіб чи дозволено подати звуковий сигнал в населеному пункті?
This is an exam question from the Traffic Rules of Ukraine about road safety and the proper use of warning devices in a populated area. It emphasizes that the horn on the road is a tool for preventing danger, not a way to express emotions, and the theoretical exam tests understanding of exceptions to general prohibitions.
The question checks knowledge of the sections of the traffic rules regarding the use of signals (paragraph 9.5) and the positioning of vehicles on the carriageway (paragraph 11.4). According to paragraph 9.5, in populated areas, sound signals are generally prohibited, but are allowed as an exception when it is impossible to prevent an accident without them. Paragraph 11.4 explains why the appearance of an oncoming vehicle in your lane on a road with two lanes in one direction is a result of a gross violation and creates a real risk of a head-on collision.
The answer "Yes" is correct, because in conditions of immediate danger, a short sound signal can help quickly attract the attention of the offending driver and avert an accident, which directly corresponds to the exception in paragraph 9.5. The answer "No" would only be correct for ordinary situations without the threat of an accident, but here the presence of an oncoming vehicle in your lane already means a dangerous scenario in which the use of the horn is permitted by the rules.
Clause 9.5
In populated areas, it is prohibited to use the horn, except in cases where it is impossible to prevent a traffic accident without it.
Application: if an oncoming vehicle appears in your lane (on your side of the road) and this creates an immediate danger of collision, the use of the horn in a populated area is allowed as an exception — to prevent a traffic accident.
Clause 11.4
On two-way roads with at least two lanes in each direction, it is prohibited to drive onto the side of the road intended for oncoming traffic.
Application: the appearance of an oncoming vehicle in your lane on such a road is the result of a prohibited maneuver and creates the danger of a traffic accident, which justifies the application of the exception from clause 9.5.
That is, the correct answer is "Yes.", given that according to the definition of the Traffic Rules, the use of the horn in a populated area is prohibited, but allowed as an exception when it is impossible to prevent a traffic accident without it, and an oncoming vehicle in your lane creates such a danger.
In a populated area, the use of the horn is generally not allowed, as the Rules restrict its use to avoid unnecessary noise and to prevent provoking conflict situations. However, this prohibition has an important exception.
According to clause 9.5 of the Traffic Rules, the horn may be used in populated areas only when it is impossible to prevent a traffic accident without it. That is, the horn is used not for “teaching a lesson” or expressing dissatisfaction, but as a means of immediate warning about danger.
A situation where an oncoming vehicle appears in your lane is precisely a potentially dangerous one. On roads with two-way traffic, where there are at least two lanes in one direction, clause 11.4 of the Traffic Rules prohibits driving onto the side of the road intended for oncoming traffic. If an oncoming car ends up in your lane, it means someone has violated the road positioning requirements and created a real risk of a head-on collision.
In such a case, a short horn signal can be a way to quickly attract the attention of the offending driver so that they stop in time or return to their lane. It is precisely because of the risk of an accident that using the horn in a populated area is considered justified here, as it falls under the exception in clause 9.5.
Therefore, the correct answer is "Yes," because in a populated area, the horn is allowed when it is necessary to prevent an accident, and an oncoming car in your lane creates an immediate traffic hazard.