12.24. Is the driver allowed to brake sharply?
UAЧи дозволено водієві різко гальмувати?
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This is an exam question from the Traffic Rules of Ukraine concerning road safety during speed reduction and braking. In practice, sudden braking often causes rear-end collisions and "chain" accidents, especially in heavy traffic, near traffic lights, and at intersections. The driver behind does not always see the danger ahead and learns about it with a delay—only by the brake lights, so sudden sharp braking without necessity creates an additional risk.
The question tests knowledge of Section 12 "Speed of Movement" of the Traffic Rules and specifically the requirements of clause 12.9 (d), which directly prohibits sudden braking but establishes an exception: when it is impossible to prevent a traffic accident otherwise. This is the logic that should be reproduced in the theoretical exam: emergency braking is allowed only as a necessary measure to avoid an accident, not as a "brake check" or an emotional reaction in traffic.
The analysis of the answer options in this ticket is straightforward. The statement about an absolute prohibition is incorrect, because the Traffic Rules provide for a single legal exception—preventing an accident. The option that allows sudden braking without conditions contradicts clause 12.9 (d) and ignores the danger to vehicles behind. Therefore, the correct formulation is the one with the prohibition and exception, as it corresponds to the rules of the road and their safety purpose.
Clause 12.9 (d)
The driver is prohibited from: "braking sharply (except in cases where it is impossible to prevent a traffic accident without it)".
Brief application: sharp (sudden) braking while driving is generally prohibited and is allowed only as a necessary measure to prevent a traffic accident.
That is, the correct answer is "Prohibited, except in cases of preventing a traffic accident," given that according to the definition in the Traffic Rules, clause 12.9 (d) directly establishes a prohibition on sharp braking and provides for the only exception — when it is impossible to prevent an accident without it.
While driving, it is important to control not only your speed but also how you reduce it. Sudden braking almost always creates an increased risk for other road users, especially for drivers behind you who may not see the reason for your reaction and may not have time to respond.
That is why clause 12.9 (d) of the Traffic Rules of Ukraine states: the driver is prohibited from braking sharply. The logic of the rule is simple: the driver behind perceives the danger with a delay, often only when they see the brake lights. By the time they assess the situation and press the brakes, the distance is sharply reduced, and if the gap is insufficient, a collision occurs.
Imagine a typical situation near a traffic light or in dense traffic: you suddenly decide to “check the brakes” or brake sharply without real necessity. The car behind could be driving at a normal speed for the flow, without any information about your reason for braking. As a result, a sudden reduction in speed ahead can provoke a rear-end collision or a chain accident.
There is only one exception to this rule: when it is impossible to prevent a traffic accident without sudden braking. For example, if an obstacle suddenly appears ahead, a pedestrian steps onto the roadway, or another car stops abruptly, and emergency braking is needed to avoid a collision. In such a situation, safety takes priority, and sudden braking will be justified.
Therefore, the correct answer is "Prohibited, except in cases of preventing a traffic accident," since the Traffic Rules prohibit sudden braking as a dangerous action for vehicles behind, allowing it only when it is otherwise impossible to avoid an accident.