The number will be on the bus stop flag - the little sign above the stop. All stop numbers in West Yorkshire begin with 450 and are then followed by five more digits.
If your bus stop only has a five-digit number, just add 450 to the beginning.
You can also look up a bus stop number on this web site by entering a service number, postcode or by looking at a map.
More FAQs about the yournextbus service