The Libero-Tarifverbund is a Swiss tariff network covering the canton of Bern and the southwestern part of the canton of Solothurn. It was established in December 2004 from the merger of the Bäre-Abi and Frosch-Abo tariff networks.^[1] The Zig-Zag network merged into Libero in 2014. With the merger of the Tarifverbund Berner Oberland [de] ("BeoAbo"), covering the Bernese Oberland, in December 2019, the network covers the entire canton of Bern.^[2]

The network is divided into three types of zones:^[3]

• Yellow: single-trip, multi-trip, day tickets, and subscriptions (monthly and annual) are valid
• Blue: shared with neighboring tariff associations; Libero tickets are valid for travel in or out of these zones and into yellow zones, but not for travel within the zones
• Green: only subscriptions are valid; most such zones are in the Bernese Oberland