How to Read the Speed on a Car Dashboard?
2 Answers
The tachometer operates based on magnetic principles. The faster the engine speed, the more pulses the ignition coil generates, resulting in a higher displayed RPM value on the gauge. The odometer is a digital instrument that functions through the engagement of the transmission gear on the counter drum wheel with the worm gear on the speedometer drive shaft, causing the counter drum wheel to rotate.
I remember when I was first learning to drive, I was really curious about how to check the speed. On the dashboard, the speedometer is usually located behind the steering wheel—it's a round dial with numbers and a needle. When you're sitting in the driver's seat and looking straight ahead, you can glance at it by slightly lowering your eyes. The number the needle points to is your current speed, typically in kilometers per hour (km/h). For example, if it points to 60, that means 60 km/h. It's important to develop the habit of frequently glancing at it while driving, especially on highways or when changing lanes, to avoid speeding tickets from speed cameras. Also, note that different car models may position the speedometer on the left or in the center, so you might need a few minutes to adjust when driving a new car for the first time. Never stare at the dial for too long—safety comes first, just take a quick peek.
