Final answer:
Vehicle defects must be reported in writing to the carrier immediately or at the end of the day for safety and compliance reasons.
Step-by-step explanation:
Any defect or deficiency that you find on your passenger vehicle must be reported to the carrier you work for in writing, either immediately or at the end of that day. It is essential for safety and regulatory compliance that these reports are made promptly and accurately, ensuring that the carrier can take necessary action to address any issues. Neglecting to report defects can lead to safety risks and may also have legal consequences for both the driver and the carrier.