Clause 1.10 (term “Controlled intersection”)

Controlled intersection — an intersection where the order of passage is determined by traffic light signals or a traffic controller.

Clause 1.10 (term “Traffic light”)

Traffic light — a light signaling device for regulating road traffic.

Clause 15.9 (section 15 “Stopping and parking”)

Stopping is prohibited: in places where the vehicle blocks traffic light signals or road signs from other road users.

Application: when approaching (and stopping) before a controlled intersection, the trolleybus driver, due to the dimensions of the vehicle, may block the view of traffic light signals (and/or signs) for drivers moving behind or nearby, so this feature must be taken into account.

That is, the correct answer is: “That due to the dimensions of the vehicle, the traffic light signals may not be visible to other road users,” given that according to the definition of the Traffic Rules, movement at a controlled intersection is determined by traffic light signals, and stopping is prohibited if the vehicle blocks traffic light signals or road signs from other road users.

When approaching a signal-controlled intersection, the trolleybus driver follows the traffic light signals just like drivers of other vehicles. However, there is always an additional factor to consider when driving a trolleybus before entering the intersection — its large dimensions and height.

Because a trolleybus is a large vehicle, it can partially or completely block the view of the traffic light for other road users who are behind or to the side. For example, if the trolleybus stops first in the lane before the stop line, the driver of a car behind may not be able to see the traffic light signal, especially when the traffic light is positioned low or to the side of the roadway. In such a situation, other drivers may mistakenly rely on the movement of the trolleybus or wait without understanding which signal is on, which causes delays and increases the risk of dangerous maneuvers.

That is why the trolleybus driver must act especially predictably: occupy the required lane in advance, stop at the designated place, and not provoke other road users to "guess" the signal based on his actions. This is directly related to the Traffic Rules requirements regarding safety and the driver's obligation not to create obstacles or danger for other road users, particularly through their actions and the positioning of their vehicle.

Therefore, the correct answer is: "That due to the dimensions of the vehicle, the traffic light signals may not be visible to other road users," since the trolleybus can block the view of the traffic light for other drivers, and this must be taken into account in order not to create danger and to act predictably at a signal-controlled intersection.