Only one person I trust when driving...Me! If I'm not sure, I get out and look (GOAL).
By only trusting myself, I can't blame anyone for when things may go wrong. If people are in a line waiting to get past, they just have to develop their patience skills.
My rig is worth 5 minutes of their time as my time is worth the wait time for someone else in return. This camping lark is all about being relaxed and taking time to enjoy.