45.29. Which of the following indicators informs the driver of a possible problem with the braking system?
UAЯкий із наведених індикаторів інформує водія транспортного засобу про можливі проблеми з гальмовою системою?
This is an exam question from the Traffic Rules of Ukraine about road safety and monitoring the technical condition of the vehicle during a trip. In the theoretical exam, it is often checked whether the driver understands the meaning of warning indicators on the dashboard, because a timely reaction to critical indicators directly affects controllability and braking distance, and therefore the safety of all road users.
In essence, this checks the sections of the Traffic Rules related to the driver's duties and technical serviceability: clause 2.3 (checking technical condition before departure and on the road), as well as requirements regarding the prohibition of operation and actions in case of malfunctions (clauses 31.1, 31.4, 31.4.1, and 31.5). The correct answer is the indicator that looks like a red exclamation mark in a circle: this is a warning signal about possible brake system problems (including an engaged parking brake, low brake fluid level, worn pads, or another dangerous failure).
The analysis of the answer options in this exam question comes down to the fact that only one indicator is a 'brake' warning of increased importance, and combinations like '1 and 4' or choosing other single numbers are incorrect, because they mix different vehicle systems or informational/auxiliary lights with a critical malfunction indicator. In practice, this means: if the red lamp with an exclamation mark does not go out after fully releasing the handbrake, you need to stop in a safe place, check the cause, and act according to the traffic rules, not continuing to drive without eliminating the dangerous malfunction or safely reaching a repair shop by the shortest route.
Clause 2.3 (driver's duties regarding technical condition control)
To ensure road safety, the driver is obliged to: a) be attentive, monitor the traffic situation, respond appropriately to its changes, monitor the correct placement and fastening of cargo, the technical condition of the vehicle, and not be distracted from driving while on the road; b) before departure, check and ensure the technically sound condition and completeness of the vehicle, as well as the correct placement and fastening of cargo.
This clause covers the requirement to monitor the readings/indicators on the dashboard that inform about the technical condition, in particular the brake system.
Clause 31.1 (general requirement for technical condition)
The technical condition of vehicles and their equipment must comply with the standards related to road safety, technical operation rules, manufacturer instructions, and other regulatory and technical documentation.
The brake system malfunction indicator (red indicator) means a possible non-compliance with safety requirements, i.e., grounds for immediate technical condition inspection.
Clause 31.4 (prohibition of operation in the presence of technical malfunctions)
Operation of vehicles is prohibited under the law if the following technical malfunctions or non-compliance with such requirements are present.
The logic of the exam question is as follows: if the indicator signals a possible brake malfunction, this potentially falls under conditions in which operation is prohibited.
Clause 31.4.1 (brake system malfunctions)
Brake system: a) loss of tightness in the hydraulic brake drive; b) loss of tightness in the pneumatic or pneumatic-hydraulic brake drive; c) the pressure gauge of the pneumatic or pneumatic-hydraulic brake drive does not work; d) the parking brake system does not work.
This is the group of malfunctions "hinted at" by the red indicator with an exclamation mark in a circle (possible drop in pressure/fluid level, loss of tightness, or engaged parking brake).
Clause 31.5 (driver's actions in case of malfunction on the road)
If any of the malfunctions specified in clause 31.4 of these Rules occur on the road, the driver must take measures to eliminate them, and if this is not possible — proceed by the shortest route to a parking or repair location, taking precautions.
The red brake system indicator is a typical reason to act according to this clause: stop, check the cause (in particular, whether the parking brake is engaged), and do not continue driving without eliminating the dangerous malfunction.
Thus, the correct answer is "1.", given that, by the definition of the Traffic Rules, the driver is obliged to control the technical condition of the vehicle (clause 2.3), and brake system malfunctions are among those for which operation is prohibited (clauses 31.4, 31.4.1) and require actions as provided in clause 31.5.
While driving, the driver must constantly monitor not only the traffic situation but also the technical condition of the car using the instruments on the dashboard. Special attention is given to the brakes, as a malfunction in the braking system directly creates a threat to traffic safety.
The indicator in the form of a red exclamation mark in a circle is specifically designed to warn about possible problems with the braking system. Its appearance means that the system responsible for braking is not operating in normal mode or needs to be checked. This is not an “informational” light, but a warning signal of increased importance.
In practice, this indicator may light up for various reasons. The most common and simple reason is the parking brake (handbrake) being engaged: the light stays on until the handbrake is fully released. But if the parking brake is already released and the indicator does not go out, this may indicate other dangerous situations, such as a drop in brake fluid level or critical wear of brake components, which can reduce braking effectiveness.
In such a case, the correct behavior for the driver is not to ignore the signal, but to stop in a safe place and determine the cause. Continuing to drive without checking may lead to brake failure or a significant increase in stopping distance, which is especially dangerous in the city and at high speed.
Therefore, the correct answer is "1.", since it is the indicator with a red exclamation mark in a circle that warns the driver about possible malfunctions or dangerous deviations in the operation of the braking system.