Won't the driver start to drive away before I can secure the car seat in the taxi?

A helpful tip to avoid this situation: Do not close the taxi door until you have finished installing the car seat and have buckled your own safety belt. Closing the door is your signal to the cab driver that you are ready to go.

Many parents find it helpful to ask the driver to start the meter immediately and also to hand him a dollar right away (just factor this into the tip at the end) – this might show him that you respect his time and pacify him as you take the minute to install the baby's car seat.