Your dream is quite vivid and layered, reflecting a myriad of emotions and experiences. Here are some potential interpretations of the key elements:

1. Trip with Brothers: This may signify a desire for connection and shared experiences with your family. Trips often symbolize journeys in life, and spending time with your brothers could represent your relationships and the support system you have.
2. Gas Station and Campsite: Gas stations are often associated with refueling and taking a break, suggesting a need for rejuvenation. The campsite might indicate a desire for adventure or a return to nature, which could point to a search for inner peace.
3. Interaction with the Police Officer: Police officers typically symbolize authority, protection, and guidance. Your conversation with him may represent your desire for reassurance in a chaotic situation or a quest for understanding in your life.
4. Truck Accident: The swerving truck and subsequent crash can symbolize feelings of loss of control or impending danger in your waking life. It might reflect anxieties or fears about situations that feel volatile or uncertain.
5. Crippling Fear and Acceptance of Death: This part of the dream indicates a confrontation with deep-seated fears, perhaps related to mortality or significant changes in your life. Accepting the possibility of death can signify a transformative experience, suggesting that you are learning to embrace uncertainty.
6. Peace and Help: The transition from fear to peace suggests a journey through your emotions. The police officer's action of pushing the truck away symbolizes support and the importance of seeking help when faced with overwhelming challenges.
7. Shared Dream Understanding: The realization that you and the officer had different endings may represent how people experience events differently, reflecting your awareness of the varying perspectives in life and possibly hinting at a need for compromise or understanding in your relationships.

Overall, this dream may be urging you to confront your fears, seek support from those close to you, and recognize the importance of shared experiences. It encourages introspection about your life journey and how you navigate challenges. If certain aspects resonate with you, consider exploring those feelings further in your waking life.