41.9. What can insufficient air pressure in the wheel tires lead to?
UAДо чого може призвести недостатній тиск повітря в шинах коліс?
Question without image
This exam question from the Traffic Rules of Ukraine concerns road safety and the technical condition of the vehicle. The correct tire pressure directly affects road grip, handling and stability, as well as how the tire performs under load and at speed. Therefore, the topic is important not only for the theoretical exam, but also for daily practice: braking, the behavior of a motorcycle or car in a turn, and the risk of sudden wheel failure all depend on the tires.
The question tests knowledge of the section of the traffic rules regarding the driver's duties and technical requirements: in particular, that the driver must check the condition of the vehicle before departure and monitor it while driving (point 2.3), and that the technical condition and tires must meet safety standards (points 31.1, 31.4, 31.4.5). Reduced pressure causes the tire to deform excessively, which leads to faster and uneven wear, greater heating, destruction of its carcass, and in critical situations, a rupture or even a "blowout" of the tire can occur.
The analysis of answer options in this exam question is straightforward: the statement that there are no consequences contradicts the basic physics of tire operation and the requirements of the Ukrainian Traffic Rules for safe operation. The promise of "better maneuverability" is also false: lowering the pressure usually worsens handling, makes the vehicle less stable, and can increase braking distance. The only correct answer direction is the one indicating accelerated wear, overheating, and the risk of tire destruction as the most dangerous scenario.
The practical conclusion for preparing for the theoretical exam and real driving: tire pressure should be checked regularly and maintained at the level recommended by the manufacturer, especially before long trips or driving with a load. This reduces wear, improves the predictability of vehicle behavior, and helps avoid dangerous wheel failures on the road.
Clause 2.3 (subclause "a")
The driver is obliged: before departure, to check and ensure the technical serviceability and completeness of the vehicle, the correct placement and securing of the load; while driving, to monitor the technical condition of the vehicle and not to be distracted from driving it.
Brief application: the question checks the understanding that tire pressure is part of the technical condition of the vehicle, which the driver must control before starting to drive and during operation, since traffic safety and tire preservation directly depend on it.
Clause 31.1
The technical condition of vehicles and their equipment must comply with the requirements of standards related to road safety and environmental protection, as well as the rules of their technical operation.
Brief application: insufficient tire pressure is a deviation from the proper technical condition, which contradicts safety requirements and operational standards, and in fact creates conditions for dangerous consequences (overheating, tire destruction).
Clause 31.4
The operation of vehicles is prohibited according to the law if there are technical malfunctions and non-compliance with the requirements of standards related to road safety and environmental protection.
Brief application: the question about the consequences of insufficient pressure (overheating, possible rupture/"explosion") is directly related to the fact that such non-compliance is dangerous in operation and falls under the general prohibition of operating a vehicle in a dangerous technical condition.
Clause 31.4.5
Tires must meet established requirements and must not have damages that expose the cord, delaminations, bulges, cuts, or other defects that make further operation dangerous (as well as other non-compliances defined for tires by rules/standards).
Brief application: insufficient pressure causes increased tire deformation, intensive heating, and accelerated destruction of the carcass, i.e., creates conditions for the appearance of dangerous defects and sudden tire failure while driving.
Thus, the correct answer is "To excessive wear, overheating, and in extreme cases – to explosion," given that by the definition of the Traffic Rules, the driver is obliged to ensure the technical serviceability of the vehicle (in particular, the tires), and the operation of a vehicle with dangerous non-compliances/malfunctions of technical condition is prohibited.
The tire pressure must be as specified by the manufacturer, as it ensures the correct shape of the tire and the proper contact area with the road. When the pressure is too low, the tire deforms more under the weight of the vehicle, which immediately worsens its operating conditions and driving safety.
With insufficient pressure, the tread does not function properly: the greatest load falls on the edges of the tire, causing the rubber to wear out faster and unevenly. The driver may not notice the problem right away, but the tire's lifespan is reduced, and handling in turns becomes worse because the tire "floats" and holds the trajectory less effectively.
In addition to wear, low pressure causes increased heating. Due to excessive deformation and rolling resistance, the tire works more with its sidewalls, increasing friction and temperature. At high speeds or under load, this can lead to carcass failure, and when hitting an obstacle or in a turn — to sudden damage, up to a blowout or the tire coming off the rim.
Therefore, the correct answer is "To excessive wear, overheating, and in extreme cases — to a blowout," since low pressure causes improper tire deformation, accelerates its wear, increases heating, and can result in dangerous tire failure while driving.