Just a safe driving shirt. Not that you need any reminders, but it's always nice to refresh the important lessons like:
1. Avoid this intersection.
Avoiding accidents is the most important thing. Going the long way around is sometimes better than taking your chances with getting hit.
2. Always look both ways.
The other drivers might not be watching.
3. Check for alternate routes.
Why get stuck in traffic when you can avoid it altogether?
4. Stay in your lane.
Collisions may still be unavoidable, but at least you can tell your insurance it wasn't your fault.
5. Hit the gas.
It may seem counterintuitive but sometimes the safest way forward is to get past the danger.
6. It's okay to run a red.
If you're turning right and traffic is clear, make your stop, and when a gap opens just go.