9.4. Which warning signal is activated on the vehicles of a convoy when stopping on the road?
UAЯкий попереджувальний сигнал вмикається на транспортних засобах колони під час зупинки на дорозі?
This exam question from the Traffic Rules of Ukraine concerns road safety and the correct use of warning signals when a potential obstacle appears on the road. When an organized group of vehicles stops, the risks increase due to the short distance between vehicles, limited visibility for other drivers, and possible dangerous maneuvers during overtaking. Therefore, the traffic rules establish a clear and mandatory way of warning.
The question tests knowledge of Section 9 "Warning Signals," specifically the requirements of clause 9.9 (f), which directly states the obligation to turn on the hazard warning lights on all mechanical vehicles in the convoy when they stop on the road. To understand when this rule applies in the theoretical exam, it is important to remember the definitions: "convoy of vehicles" in the Traffic Rules (clause 1.10) is an organized group of three or more vehicles, and "stop" (clause 1.10) is the cessation of movement for up to 5 minutes or longer if necessary.
The analysis of the options in the tickets is logical: low beam headlights are a characteristic feature of a moving convoy, but are not a special signal for a stopping situation; position lights only indicate the dimensions of the vehicle and do not provide such a clear warning of danger as a special mode. Instead, the hazard warning lights according to clause 9.9 (f) are the mandatory warning signal specifically for stopping a convoy, to attract the attention of other road users in advance and reduce the risk of collision or dangerous overtaking.
Clause 9.9 (subclause d) — Section 9 "Warning Signals"
The hazard warning lights must be switched on: a) in the event of a forced stop on the road; b) when stopping at the request of a police officer or due to the driver being dazzled by headlights; c) on a motor vehicle moving with technical malfunctions, if such movement is not prohibited by these Rules; d) on a motor vehicle being towed; e) on a motor vehicle marked with the identification sign "Children" that is transporting an organized group of children, during their boarding or alighting; f) on all motor vehicles of a convoy during their stop on the road; g) in the event of a road traffic accident (RTA).
Application: this subclause directly establishes the obligation to turn on the hazard warning lights on all vehicles of the convoy precisely during a stop on the road.
Clause 1.10 (term "Convoy of vehicles")
Convoy of vehicles — an organized group of three or more vehicles moving together in the same direction directly one after another with the dipped headlights constantly switched on.
Application: defines what is considered a "convoy" for which the requirement of clause 9.9 (f) applies.
Clause 1.10 (term "Stop")
Stop — cessation of movement of a vehicle for up to 5 minutes or more, if necessary for boarding (alighting) passengers or loading (unloading) cargo, fulfilling the requirements of these Rules (yielding the right of way, fulfilling the requirements of a traffic controller, traffic light signals, etc.).
Application: clarifies what is considered a "stop" in the Traffic Rules, during which the hazard warning lights must be switched on for a convoy (clause 9.9 (f)).
Thus, the correct answer is "Hazard warning lights.", given that according to the definition in the Traffic Rules, during a stop on the road, the hazard warning lights must be switched on on all motor vehicles of a convoy (clause 9.9 (f)).
A convoy of vehicles in the Traffic Rules is understood as an organized group of at least three cars moving one after another in the same direction. When such a group is forced to stop on the road, it creates an additional risk for other road users: the vehicles are located close to each other, and passing by or approaching the stopping place can be dangerous due to limited visibility and unexpected maneuvers.
That is why the Rules specifically establish a mandatory warning signal for this case. In clause 9.9 (f), it is stated that when a convoy stops on the road, the hazard warning lights must be turned on in all mechanical vehicles of the convoy. This is not the driver's choice and not a signal only for the lead or last vehicle, but a requirement for every vehicle in the convoy.
In practice, this means: if a convoy stops to comply with the Rules, for boarding/alighting, or for any other reason, the drivers of all vehicles in the convoy turn on the hazard lights to warn others in advance about the obstacle and to increase the visibility of the convoy.
Therefore, the correct answer is "Hazard warning lights," since during the stop of a convoy on the road, the Traffic Rules (clause 9.9 (f)) directly require the hazard warning lights to be turned on in all vehicles of the convoy.