Queue Riddle

There's a queue at the cinema

train station and bus stop

There's a queue at the supermarket

every time I shop

There's a queue at the ice cream van

and the Chinese takeaway

A 30-minute queue at the Post Office today

There's a queue at the traffic lights

while we sit in our car

But where would you find a queue

in-between a P and R?*

(*in the alphabet of course)