Differences in driving styles can cause arguments and tension. Never good, especially when driving.
While you may want to tell your partner to slow down or use their turn signal more often, these statements can be misconstrued as criticisms or backseat driving. This could cause a fight, which might distract the driver and …
If you truly are getting anxious or queasy, say that. Instead of criticizing their driving or telling them how to drive, say how their driving makes you feel. You might say, “I’m feeling queasy in my stomach, I am feeling anxious right now. Please slow down.”
Always communicate in a non-accusing way. Focus on how you feel rather than what they are doing wrong.