Every bus in Victoria could be fitted with a $2000 external bike rack, despite a trial that showed they are used less than once a day on average.

The 12-month trial by Public Transport Victoria on four bus routes ended in April after minimal take-up by passengers.

Data reveals the trial bike racks were used less than once a day on average, and 782 times overall during the trial, which involved 15 buses.

They were used just 22 times on route 512 between Strathmore and East Coburg, which is just under twice a month.