Modal analysis can help identify regions in an automotive structure that are less affected by vibrations, but the definition of "safe" varies based on specific frequency ranges and application needs. The blue region in a mode shape may indicate lower vibrational response, but its safety depends on the context and criteria set for vibration tolerance. Determining a safe region requires a clear understanding of the frequency ranges of interest and the acceptable levels of vibration. The size of the safe region also plays a crucial role in its effectiveness. Ultimately, a comprehensive modal analysis tailored to specific requirements is essential for accurate conclusions about safe regions in automotive vibrations.