33.3.40. For what purpose may this road sign be installed?
UAЗ якою метою може бути встановлений даний дорожній знак?
This exam question from the Traffic Rules of Ukraine checks the understanding of prohibitory road signs and their role in road safety. It concerns situations where a driver needs to clearly distinguish a “no entry from a certain direction” from other restrictions, so as not to create oncoming traffic, not to enter a prohibited section, and not to provoke an accident. Such knowledge directly affects both successful completion of the theoretical exam and safe behavior in real traffic.
The question belongs to Section 33 of the Traffic Rules, the topic “Road Signs,” subsection “Prohibitory Signs,” specifically sign 3.21 “No Entry.” It checks whether the candidate understands that this sign is used not only at the entrances to one-way streets, but more broadly: to prevent driving against the general flow (including on roads marked with sign 5.8 with a lane for route vehicles), to organize separate entry/exit on the territories of parking lots, gas stations, and similar facilities, as well as to prohibit entry to a specific lane (in combination with plate 7.9 “Traffic Lane”). That is why the listed purposes do not compete with each other but complement one another as permissible cases for installing the sign.
Practically, this means: upon seeing sign 3.21, the driver must understand that entry in this direction is prohibited, even if the road “looks clear” or it is an entrance to a gas station or parking lot. In the theoretical traffic rules exam, it is important to remember that the correct answer is the generalized option that covers all typical purposes for installing the sign, since the Traffic Rules of Ukraine directly provide for each of them in the description of sign 3.21.
Clause 33.3 — 33 "Road Signs", 3 "Prohibitory Signs", sign 3.21 "No Entry"
"Sign 3.21 'No Entry' prohibits entry of all vehicles for the following purposes: • to prevent oncoming traffic of vehicles on sections of roads with one-way traffic; • to prevent vehicles from entering against the general flow of traffic on roads marked with sign 5.8 'Road with a lane for route vehicles'; • to organize separate entry and exit at areas used for parking, rest areas, gas stations, etc.; • to prevent entry onto a specific traffic lane, in which case sign 3.21 must be used together with plate 7.9 'Traffic Lane'; • to prevent entry onto roads that directly extend within the border strip to the state border and do not provide access to established border crossing points (except for agricultural machinery, other vehicles and mechanisms involved in production in accordance with the law and with the appropriate legal grounds for agricultural activities or other works, elimination of emergencies and their consequences, as well as vehicles of the Armed Forces, National Guard, Security Service of Ukraine, State Border Guard Service, State Migration Service, State Fiscal Service, Civil Protection Operational Rescue Service, National Police, and Prosecutor's Office when performing operational and official tasks).
The sign does not apply to vehicles operating on established routes."
(This provision directly lists the purposes for installing the sign, which correspond to options 1–4 in the question.)
Clause 33.5 — 33 "Road Signs", 5 "Informational and Direction Signs", sign 5.5 "One-Way Road"
"A road or carriageway on which vehicle traffic is carried out in one direction across the entire width."
(Sign 3.21 is used, in particular, to prevent oncoming traffic on one-way sections.)
Clause 33.5 — 33 "Road Signs", 5 "Informational and Direction Signs", sign 5.8 "Road with a lane for route vehicles"
"A road on which, on a specially designated lane (lanes), the movement of route vehicles is carried out against the general flow of vehicles."
(One of the purposes of sign 3.21 is to prevent vehicles from entering against the general flow on such roads.)
Clause 33.7 — 33 "Road Signs", 7 "Plates to Road Signs", plate 7.9 "Traffic Lane"
"Indicates the traffic lane to which the sign applies."
(According to the Traffic Rules, to prohibit entry onto a specific lane, sign 3.21 is used together with plate 7.9.)
Therefore, the correct answer is "Answers 1, 2, 3, and 4," given that, according to the definition in the Traffic Rules, the description of sign 3.21 directly lists all these purposes for its installation.
Road sign 3.21 “No entry” is installed when it is necessary to completely block entry in a certain direction for all vehicles (the exception is public transport vehicles operating on established routes). That is, this sign is not about speed or stopping restrictions, but specifically about prohibiting entry from a particular side.
The most common purpose of installing sign 3.21 is to prevent oncoming traffic where it is dangerous or not intended by the traffic organization plan. A typical example: a one-way street. At the “wrong” entry, 3.21 is placed so that a driver does not enter against the flow and create a hazardous situation.
The second common situation concerns roads with a lane for public transport vehicles, where the general flow moves in one direction, but the special lane may operate separately. To prevent ordinary cars from driving against the general flow or entering where they are prohibited, the “No entry” sign is also used at such entries.
The third purpose is to organize separate entry and exit on areas with internal traffic: parking lots, gas stations, rest areas, etc. For example, at a gas station, one driveway is made for entry only, and another for exit only. At the “exit” driveway, sign 3.21 is placed on the entry side so that cars do not drive against the flow inside the area.
Another purpose is to prohibit entry specifically to a particular traffic lane. In this case, sign 3.21 is used together with plate 7.9 “Traffic lane” to make it clear that the prohibition applies not to the entire road, but to a specific lane (for example, a dedicated or special lane).
Therefore, the correct answer is “Answers 1, 2, 3, and 4.”, since sign 3.21 according to the Traffic Rules can be installed for various purposes of entry prohibition: to prevent oncoming traffic on one-way sections, to prevent driving against the flow on specially organized roads, to separate entry/exit on certain areas, and to prohibit entry to a specific lane.