Effectiveness of hand brake [PKB] in an emergency!!!


Reflection from the discussion in the group that if the main brake failed (stops working) due to any reasons, whether the hand brake will work?

The reply is yes, but again it depends from model to model. In this article, we will talk about the effectiveness of hand brakes in an emergency situation. The hand brake, also known as the parking brake (PKB), can work when the main brakes fail, this is the most noticeable reason why the hand brake is important, If the hydraulic lines or master cylinder in a vehicle’s braking system fail, the hand brake will still allow you to stop the car.

The hand brake is a separate system from the main brakes, and it uses cables to apply the rear brakes. This means that even if the main brakes fail due to a hydraulic issue, the hand brake (PKB) will still work.In older vehicles and some modern models, the handbrake is usually a mechanical system that operates independently of the main hydraulic brake system.

A mechanical handbrake can still function if the main brake system fails and may provide some degree of braking power. However, it’s important to note that the hand brake is not designed to provide the same level of braking power as the main brakes. It is primarily intended for use when parking the vehicle or as a backup in case of brake failure.

Therefore, relying solely on the hand brake for braking in an emergency situation is not recommended. Furthermore, the effectiveness of PKB can vary depending on factors like the condition of the handbrake, the terrain, and the speed of the vehicle. It might not be as powerful as the main brakes, but it could help slow the vehicle down and potentially bring it to a stop, whereas in many modern cars, especially those equipped with electronic parking brake systems, the handbrake may be linked to the main brake system.

If the main brake system fails, the electronic handbrake may also be affected and might not work as expected. However, some electronic systems have fail-safe mechanisms allowing the handbrake to function independently in emergencies. However, it is important to note that the hand brake is not as strong as the main brakes.

This means that it will take longer to stop your car with the hand brake, and your stopping distance will be longer. Additionally, if you pull the hand brake too hard, you could lock up the rear wheels, which could cause you to lose control of your car.If your main brakes fail, you should use the hand brake to slow down your car and bring it to a stop. However, you should be prepared for a longer stopping distance and the possibility of losing control.Here are some tips for using the hand brake to stop your car if your main brakes fail.

In case of emergency, pull the hand brake slowly and steadily, stay calm and focused, and activate your hazard lights to aware other drivers. Do not pull the hand brake too hard, as this could lock up the rear wheels, and downshift to lower gears (if you have a manual transmission) to help slow down the vehicle. Use the main brakes as well, if they are still working, need to apply steady and gradual pressure to the hand brake while keeping the steering wheel straight to avoid skidding.

Be prepared and keep in mind that the stopping distance is longer with the hand brake application. If you are driving in a hilly area, you should use the hand brake to hold your car in place when you are parked, this will help to prevent your car from rolling away.

In case you start to skid, applying the hand brake can help to regain control of your car, this is because the hand brake applies a braking force to the rear wheels, which can help to straighten out the car. This is essential to note that relying solely on the handbrake to stop a vehicle in the event of a main brake failure is not recommended at all, the handbrake is primarily designed for parking and emergency situations and might not have enough stopping power to handle the full weight and momentum of a moving vehicle. If the main brakes fail, it’s crucial to take additional safety measures:

Brakes (main braking system) are an essential part of any vehicle, and they play a vital role in safety, without brakes, it would be very difficult to control a moving vehicle, and accidents would be much more common. In addition to these safety benefits, brakes also help to extend the life of your tires. When you brake, the kinetic energy of your vehicle is converted into heat.

This heat is dissipated through the friction between the brake pads and the rotors or drums. If your brakes are not working properly, they will not be able to dissipate this heat as effectively, which can lead to premature wear of tires. Here are some of the reasons why brakes are so important in automotive. The main brake system, allowsthe driver to stop the vehicle, this is obviously essential for safety, as it allows you to avoid collisions and other hazards.

It allows you to slow down your vehicle, this can be important in a variety of situations, such as when approaching a stop sign or red light, or when driving in bad weather. The proper braking system enables the driver to maintain a safe distance from other vehicles, or for navigating curves or hills. As we know that skidding can be dangerous, as it can cause you to lose control of your vehicle, the braking mechanism helps to prevent skidding by providing a smooth and controlled deceleration.

A brake is a mechanical device that inhibits motion by absorbing energy from a moving system. It is used for slowing or stopping a moving vehicle, wheel, or axle, or to prevent its motion, most often accomplished by means of friction. There are many different types of brakes, but they all work on the same basic principle. When the brake is applied, a force is created that opposes the motion of the system.

This force can be created by friction, electromagnetism, or other means. The most common type of brake is the friction brake. This type of brake uses friction to slow down or stop a moving object. The friction brake is typically made up of two surfaces, one of which is stationary and the other of which is movable. When the brake is applied, the movable surface is forced against the stationary surface, creating friction. The friction between the two surfaces slows down or stops the movable surface. Other types of brakes include electromagnetic brakes, which use electromagnetism to create a force thatopposes the motion of the system, and hydraulic brakes, which use hydraulic fluid to transmit force from the brake pedal to the brake pads.

Here are some different types of brakes:

  • Disc brakes: These brakes are the most common type of brake on cars and trucks. They consist of a rotor, which is attached to the wheel, and brake pads, which are mounted in a caliper. When the brake pedal is pressed, the caliper moves the brake pads against the rotor, creating friction that slows down the wheel.
  • Drum brakes: These brakes were once more common than disc brakes, but they are now less common. They consist of a drum, which is attached to the wheel, and brake shoes, which are mounted in a backing plate. When the brake pedal is pressed, the backing plate moves the brake shoes against the drum, creating friction that slows down the wheel.
  • Anti-lock brakes (ABS): These brakes help to prevent skidding by automatically pumping the brakes when the wheels start to lock up. ABS is a very important safety feature, and it is now standard on most cars and trucks.

For all of these reasons, it is important to keep your brakes in good working order. You should have your brakes inspected regularly by a qualified mechanic, and you should replace them as needed.

By taking care of your brakes, you can help to keep yourself and others safe on the road. There are some tips for maintaining your brakes like you should always get your brakes to be inspected regularly by a qualified mechanic. This will help to ensure that they are in good working order and that they will not fail unexpectedly.

Replace your brakes as needed, this can vary depending on the type of brakes you have, your driving habits, and the environment in which you drive. You should always avoid driving with low brake fluid levels, low brake fluid levels can cause the brakes to become spongy or unresponsive.Avoid riding your brakes. 

Riding your brakes means applying them lightly for a long period of time. This can cause the brakes to overheat and fail.

Take away from this article>Automotive technology is the practical application of knowledge about self-propelled vehicles, considering the fast-moving technology that is being used by vehicle manufacturers and is well considered for safety as first priority.

This exclusive article has been written by Muhammad Rafique and published in Automark Magazine’s August-2023 printed edition.