When utilizing double clutching for shifting, what tool can assist in the process?

When shifting gears using the double clutching technique, the tachometer plays a crucial role in ensuring smooth gear transitions. This instrument displays the engine's RPM (revolutions per minute), allowing the driver to gauge the engine speed accurately during the shift.

Double clutching involves pressing the clutch pedal twice during the shift process—once to disengage the current gear and once to engage the next gear. The tachometer helps the driver determine when to release the clutch and select the right gears by providing feedback on engine speed, which is essential for matching the engine RPM to the appropriate gear. This synchronization minimizes gear clash and promotes smoother gear shifts, making it easier to manage the vehicle's power and speed effectively.

While the other options may contribute to vehicle operation, they do not directly assist in the specific process of double clutching. For instance, the GPS system provides navigation data, brake pedal feedback is more related to stopping or slowing the vehicle, and the clutch indicator light alerts the driver to clutch issues but does not provide information on engine RPM.