9.1. Which warning signal must be switched on while driving in all vehicles of a convoy during daylight hours?
UAЯкий попереджувальний сигнал вмикається під час руху на всіх транспортних засобах колони у світлий час доби?
This exam question from the Traffic Rules of Ukraine concerns road safety and the correct use of warning signals when vehicles are moving in an organized convoy. It is important for other drivers to immediately recognize that a convoy is on the road, assess its length, and not attempt to dangerously “cut in” between vehicles. Therefore, the traffic rules establish mandatory requirements for light signals even during daylight hours.
The question tests knowledge of Section 9 “Warning Signals” (clause 9.8 a) and Section 25 “Movement of Vehicles in Convoys” (clause 25.1). According to these rules, when moving as part of a convoy, each vehicle must be clearly marked with dipped headlights turned on, and this is considered the required warning signal during the day. This is a typical topic for the theoretical exam: not “which light is brighter,” but “how a convoy is correctly marked according to the traffic rules.”
If you compare the answer options, amber flashing beacons are used in special cases (for example, during road works or when transporting oversized loads), but this is not a general requirement for all convoy participants. Fog lights are intended for fog and other conditions of poor visibility, so they are not suitable for marking a convoy during the day. Daytime running lights have separate rules for use (in particular, outside populated areas during a specified period), and they do not replace the established requirement for dipped headlights for convoys; therefore, the wording “dipped headlights or daytime running lights” also does not comply with the traffic rules here. In practice, this knowledge helps to properly organize convoy movement and make it visible to all road users.
Clause 9.8 (9 "Warning signals", subclause "a")
While driving mechanical vehicles during daylight hours, in order to indicate a moving vehicle, the low beam headlights must be turned on: a) in a convoy.
This subclause directly specifies which warning signal is used during the day for vehicles moving in a convoy: it is the low beam headlights.
Clause 25.1 (25 "Movement of vehicles in convoys")
Each vehicle moving in a convoy must display the identification sign "Convoy", as provided for in subclause "ye" of clause 30.3 of these Rules, and the low beam headlights must be turned on. The identification sign may not be installed if the convoy is accompanied by emergency vehicles with flashing red, blue and red, green or blue and green beacons and/or special sound signals.
This clause establishes the obligation for each vehicle in the convoy to turn on the low beam headlights while moving (regardless of the time of day), and thus confirms the correct answer specifically for daylight hours.
Therefore, the correct answer is "Low beam headlights," given that according to the Traffic Rules, when vehicles are moving in a convoy (during daylight hours — as a warning signal), each of them must have the low beam headlights turned on (clauses 9.8 "a" and 25.1).
When vehicles move as an organized convoy, it is important for other road users to understand in advance that they are not seeing individual cars, but a group moving in coordination. That is why the Rules require a clear “visual sign” of the convoy while driving, even during the daytime.
Section 25 of the Traffic Rules (paragraph 25.1) states directly: each vehicle moving as part of a convoy must have its low beam headlights switched on while driving. This is done for better visibility and safety, so that drivers from other directions or neighboring lanes can see the convoy earlier and correctly assess its length.
In practice, this looks as follows: if, for example, ten cars are moving in a convoy during the day, all ten must drive with their low beam headlights on. Daylight does not cancel this requirement specifically for convoys: the purpose here is not to illuminate the road, but to clearly mark the vehicles moving together.
It is important not to confuse this with daytime running lights: they are used under separate conditions, while for convoys the Rules specify low beam headlights as the mandatory warning signal when driving during daylight hours.
Therefore, the correct answer is "Low beam headlights," because when moving as part of a convoy, each vehicle during daylight hours must be additionally marked by switching on its low beam headlights.