Taxi slow down buttons
Taxis in Japan are just as hospitable and helpful as you’d expect them to be. In the back seat, you can find “slow down” buttons, perfect for when that over-eager driver is trying to get somewhere a bit too quickly for your liking.
If you’re prone to feel a bit queasy in the back of cars then you can let your driver know that a slower pace would be appreciated, without even having to have a conversation about it.