Because the bus does not wait for you.
Wait in the bus stop!
The past of wait is waited: I waited for the bus, I had waited for the bus for over an hour.
Que
Wait at an appropiate bus stop and signal in good time when the bus approaches.
wait for the bus driver "ok" to pass and go
You wait for a bus at a bus station (or at a bus stop). You wait for a train at a railway station. Railway stations often have bust stops or bus stations adjacent. The other term that is used in BOTH industries is TERMINUS.
to rest on as you wait for a bus.
wait
You stop and wait until the bus turns off their lights and the bus takes off.
The past participle of "wait" is "waited." For example, "I have waited for hours for the bus to arrive."
It means you have to wait for the next bus and can be taken to mean, by extension, missing a deadline, not doing something in time.