51.36. Is antifreeze a poisonous substance?
UAЧи є антифриз отруйною речовиною?
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This is an exam question from the block on safe vehicle operation and handling of technical fluids, which directly affects the safety of the driver and passengers. Although the traffic rules regulate behavior on the road, preparation for the theoretical exam also tests basic knowledge of risks during vehicle maintenance at home and on the road, particularly regarding toxic substances in the garage or trunk.
From the perspective of the Traffic Rules of Ukraine, there is no direct regulation that separately defines the toxicity of antifreeze (this is not a term from the sections of the Traffic Rules on the technical condition or operation of vehicles). However, in the context of safe use of a vehicle, it is important to understand that most coolants are made on the basis of ethylene glycol, which is highly toxic if it enters the body and can cause severe poisoning; prolonged inhalation of vapors in case of a leak in the cooling or heating system is also undesirable.
The explanation of the answer options is logical: denying toxicity is incorrect, since not only the "concentrate" can be dangerous — ready-to-use mixtures also contain ethylene glycol in harmful concentrations. That is why the correct statement is about high toxicity: for the driver, this means not storing antifreeze in beverage bottles, avoiding contact with skin and eyes, working with gloves, and promptly checking the car if there is a sweet smell in the cabin. Such knowledge complements the traffic rules and helps to successfully pass the theoretical exam and act safely in real life.
Traffic Rules of Ukraine — absence of a direct provision regarding the toxicity of antifreeze
The current Traffic Rules of Ukraine do not contain any clause (including in the definitions of clause 1.10 or in the sections on the technical condition/operation of vehicles) that defines antifreeze as a "poisonous substance" or establishes its toxic properties. This exam question does not pertain to the Traffic Rules as a regulatory act on traffic organization, but rather to the related block of driver training on the safe use and handling of operating fluids (occupational safety/safety/first aid).
Therefore, the correct answer is "Yes, it is very poisonous," given that, according to the content of the Traffic Rules, the toxicity of antifreeze is not defined by specific clauses of the Rules; however, within the framework of the safe operation of a vehicle, antifreeze (mainly based on ethylene glycol) is a highly toxic substance and requires careful handling.
Antifreeze belongs to automotive technical fluids that drivers regularly encounter during vehicle maintenance: topping up, replacement, draining used fluid. Despite the common name "coolant," due to its properties it can pose a serious danger to human health.
The reason lies in its composition: many antifreezes are made on the basis of ethylene glycol. This substance is necessary to prevent the coolant from freezing in winter and to ensure stable operation at high engine temperatures. However, it is ethylene glycol that is toxic: ingestion of antifreeze even in relatively small amounts can cause severe poisoning.
In practice, this means that antifreeze must not be stored in household containers (for example, in water bottles), must not come into contact with food or drinks, and contact with skin and eyes should be avoided. It is also important to remember that if there is a leak in the heating/cooling system, fumes can enter the cabin and cause prolonged deterioration of well-being, so any smell of "sweet" technical fluid in the cabin is a reason to check the vehicle.
Therefore, the correct answer is "Yes, it is very poisonous," since antifreeze often contains ethylene glycol, which is a toxic substance and, if it enters the body, can cause severe poisoning.