T20 bulbs and brake light bulbs are two different types of light bulbs commonly used in vehicles. T20 bulbs, also known as 7440, 7443, or W21W bulbs, are primarily used for turn signals, brake lights, and parking lights in cars. These bulbs are characterised by their dual filament design, which allows them to function as both a normal light and a brighter brake or turn signal light. T20 bulbs are typically found in the tail light assembly and play a crucial role in alerting drivers behind of any upcoming turns or sudden braking.
On the other hand, brake light bulbs, as the name suggests, are specifically designed for brake lights. These bulbs are responsible for illuminating the rear of the vehicle when the driver applies the brakes. Unlike T20 bulbs, brake light bulbs do not have a dual filament design since their purpose is solely focused on emitting bright light when the brake pedal is pressed. This sudden increase in brightness is intended to immediately grab the attention of drivers behind, ensuring their awareness of the vehicle's intention to slow down or stop.
Both T20 bulbs and brake light bulbs play a vital role in maintaining road safety. They provide visibility and communicate the driver's intentions to other road users. The use of T20 bulbs in turn signals and brake lights is essential for indicating direction changes and alerting others during sudden decelerations. Brake light bulbs, although simple in design, are crucial for ensuring that drivers behind have ample time to react to a vehicle slowing down or coming to a complete stop.
