Free all-day travel has been approved for concessionary bus pass holders in a bid to increase connectivity and offer greater flexibility for passengers.
Cambridgeshire and Peterborough-issued concessionary bus passes currently permit free travel during off-peak hours only, from 09:30 on weekdays.
The combined authority, external board, which approved the scheme, said it would come into effect in May.
“This is another positive step forward in our work to make buses meet the needs of our communities,” said Labour mayor Nik Johnson.