35.30. At what moment should you gradually release the parking brake when starting to move uphill?
UAУ який момент слід поступово відпускати стоянкове гальмо, починаючи рух на підйомі?
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This is an exam question from the Traffic Rules of Ukraine concerning the safe start of movement on an incline, when a car, under the force of gravity, may involuntarily roll backward. In real conditions, even a slight rollback creates an obstacle and danger for other road users, so the driver's correct actions are directly related to basic safety requirements, attentiveness, and preventing the creation of a hazardous situation on the road.
In essence, this question tests the section of the traffic rules "Starting to move and changing its direction" (specifically the general principle of a safe start), as well as practical understanding of how the vehicle's controls work. In the theoretical exam, it is important to know the logic: holding the car with the parking brake should smoothly transition to holding it with engine power through the transmission, without a pause when the car is left "unsupported."
The option where the parking brake is released too early is incorrect, because before traction appears at the wheels, the car starts rolling backward, violating the requirements of a safe maneuver. The opposite mistake is holding the parking brake too long and releasing it after attempting to move: the wheels remain braked, the engine receives excessive load, which often leads to jerking or stalling. That is why the correct principle in the traffic rules and in training practice is synchrony: the brake is released at the moment when the car is already "picked up" by the traction and begins to move forward.
Clause 1.5
The actions or inaction of road users and other persons must not create danger or obstacles to traffic, threaten the life or health of citizens, or cause material damage.
Clause 10.1 — 10 "Starting to move and changing its direction"
Before starting to move, changing lanes, or making any change in the direction of movement, the driver must make sure that it will be safe and will not create obstacles or danger to other road users.
Clause 2.3 (subclause "b") — 2 "Duties and rights of drivers of motor vehicles"
To ensure road safety, the driver is obliged to: be attentive, monitor the road situation, respond appropriately to its changes, monitor the correct placement and securing of the load, the technical condition of the vehicle, and not be distracted from driving this vehicle while on the road.
That is, the correct answer is "Simultaneously with the start of movement," considering that according to the definition of the Traffic Rules, starting to move must be safe and must not create danger or obstacles for other participants, and premature release of the parking brake on an incline can cause involuntary rollback and create danger/obstacles.
Starting to move uphill requires a clear sequence of actions because the car is under the force of gravity and tends to roll backward. At this moment, the parking brake holds the vehicle stationary, and the driver's task is to transfer traction to the wheels so that the holding force smoothly shifts from the brake to the engine, without rolling back.
If you release the parking brake too early, that is, before traction appears on the drive wheels, the car will be left without restraint and will begin to roll backward. In real conditions, this is dangerous: there may be another vehicle behind, and even a small rollback creates a risk of collision.
If you hold the parking brake for too long and release it after you have already started to move, another problem arises. The engine, through the transmission, tries to move the car, but the wheels are actually "locked" by the parking brake. For a car with a manual transmission, this often results in a sharp drop in revs and possible engine stalling, especially for an inexperienced driver.
Therefore, the correct principle is as follows: you create initial traction (bring the clutch to the "biting point," and if necessary, add a little gas), and at this moment you begin to smoothly release the parking brake. Then the car either remains stationary or just starts to move forward, but has no chance to roll back, because the holding force continuously transitions from the brake to the engine's traction.
Thus, the correct answer is "Simultaneously with the start of movement," since only such a synchronized action prevents rollback and at the same time does not create unnecessary load that could cause the engine to stall.