35.6. In which cases should the lateral clearance be increased?
UAУ яких випадках слід збільшити боковий інтервал?
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This is an exam question from the Traffic Rules of Ukraine concerning road safety and the driver's ability to correctly choose the side clearance while driving. The side interval is needed not "for comfort," but to avoid touching or side collisions with other vehicles, pedestrians, the roadside, or obstacles, even if someone deviates slightly from their trajectory. That is why theoretical exams often include situations where the risk of such deviation increases.
The question tests the section of the traffic rules about distance, interval, and oncoming passing (points 13.1–13), as well as understanding the term "safe interval" (p. 1.10) and the connection between the interval and speed/conditions (p. 12.1). The logic is simple: a safe interval is not a fixed number; it should be increased whenever conditions make driving less stable or less predictable.
Each of the proposed options describes exactly such hazardous conditions: during oncoming passing at high speed, the influence of air flows increases and even a small shift becomes more critical; next to a long vehicle, you need to consider the "sweeping" of the trailer and the deviation of the rear part on bumps or in a turn; on wet, slippery, or uneven surfaces, grip worsens and the likelihood of skidding and "wandering" of the trajectory increases. Therefore, the correct conclusion for the theoretical traffic rules exam is one: in all these situations, the side interval should be increased, providing a real margin of space for safe maneuvering.
Clause 1.10 (the term “Safe interval”)
Safe interval — the distance between the sides of vehicles or between a vehicle and other objects, which ensures road safety.
This term directly indicates that the value of the lateral interval is not fixed, but must ensure safety under specific conditions (speed, dimensions, surface, wind, unevenness, etc.).
Clause 13.1 — 13 “Distance, interval, oncoming passing”
The driver, depending on the speed, road situation, cargo characteristics, and condition of the vehicle, must maintain a safe distance and a safe interval.
The content of this clause means that when speed increases, when passing long/large vehicles, on uneven/slippery roads, etc., the driver must increase the lateral interval so that it remains “safe.”
Clause 12.1 — 12 “Speed of movement”
When choosing a safe speed within the established limits, the driver must take into account the road situation, as well as the characteristics of the cargo being transported and the condition of the vehicle, in order to be able to constantly control its movement and drive it safely.
Since the safe interval according to the Traffic Rules depends, in particular, on speed and road conditions, increasing speed or complicating driving conditions logically requires increasing the lateral interval.
That is, the correct answer is “In all of the listed cases.”, given that by definition of the Traffic Rules, the safe interval is chosen depending on speed and road conditions and must ensure safety in each of the listed situations.
The lateral interval in the Traffic Rules is understood as the safe distance to the side between your vehicle and other vehicles or objects (the edge of the carriageway, shoulder, pedestrians, etc.). The driver is required to choose it in such a way as to avoid contact or collision even in the event of a slight deviation of any road user from their trajectory.
Firstly, the interval should be increased with increasing speed, especially during oncoming passing. At higher speeds, any involuntary displacement of the car (due to unevenness, gusts of wind, steering error) happens faster and results in a greater lateral shift. Therefore, what was safe at low speed can become dangerous at higher speed.
Secondly, when passing or driving next to long vehicles (a truck with a trailer, road train, bus), the interval should also be increased. The trailer or rear part of a long vehicle may not follow exactly in the tracks of the tractor (especially on uneven surfaces or in a turn), and with a small interval, there is a risk of side contact.
Thirdly, in adverse road conditions (wet, slippery, snowy surface, ruts), tire grip with the road decreases, and as a result, the car is more easily "pulled" to the side and it is more difficult to maintain a straight course. In such conditions, the driver should allow for a larger margin of space on the left and right, so that even with a slight skid, side contact is avoided.
Therefore, the correct answer is "In all of the above cases," since increasing speed, the peculiarities of driving long vehicles, and deteriorating road grip all increase the likelihood of lateral proximity, so only a larger lateral interval ensures safety.