{"id":"881e4bda-6a29-4163-a8b1-24497ae76df7","name":"B.B.BASE","slug":"bbbase","links":{"human_path":"/experiences/bbbase","machine_capability":"experience.get"},"media":[{"role":"hero","license":"CC BY-SA 4.0","alt_text":"The JR East B.B.BASE bicycle train running on the Sotobo Line in Chiba, Japan.","position":1,"media_type":"licensed_photo","credit_line":"Photo: MaedaAkihiko / Wikimedia Commons — CC BY-SA 4.0","license_url":"https://creativecommons.org/licenses/by-sa/4.0/","ai_generated":false,"external_url":"https://upload.wikimedia.org/wikipedia/commons/f/f7/JRE-209-2200-BOSO_BICYCLE_BASE.jpg","rights_owner":"MaedaAkihiko","storage_path":"experience-media/hero/bbbase.jpg","rights_verified_at":"2026-09-09T09:49:06.654061+00:00"},{"role":"gallery","license":"CC BY-SA 4.0","alt_text":"Interior of B.B.BASE with bicycle racks between the seats.","position":2,"media_type":"licensed_photo","credit_line":"Photo: まァくん810号 / Wikimedia Commons — CC BY-SA 4.0","license_url":"https://creativecommons.org/licenses/by-sa/4.0/","ai_generated":false,"external_url":"https://upload.wikimedia.org/wikipedia/commons/2/2e/Interior_of_BosoBicycleBASE.jpg?utm_source=commons.wikimedia.org&utm_campaign=imageinfo&utm_content=original","rights_owner":"まァくん810号","storage_path":"experience-media/gallery/bbbase-7.jpg","rights_verified_at":"2026-09-11T17:28:02.074+00:00"}],"route":{"name":"B.B.BASE Uchibo outbound: Ryogoku–Wadaura","slug":"bbbase-uchibo-ryogoku-wadaura","stops":[{"lat":35.695833,"lon":139.793889,"name":"Ryogoku","role":"origin","country":"Japan","sequence":1,"country_code":"JP"},{"lat":35.044722,"lon":140.024722,"name":"Wadaura","role":"destination","country":"Japan","sequence":2,"country_code":"JP"}],"direction":"Ryogoku → Wadaura","journey_id":"2a8f774d-16bf-4144-bea7-3c574b01cf41","geometry_semantics":"representative_stops; no exact track geometry implied"},"operator":{"name":"JR East","slug":"jr-east","official_url":"https://www.jreast.co.jp/e/"},"countries":[{"iso2":"JP","name":"Japan","slug":"japan"}],"editorial":{"tagline":"Bring the bike aboard and start riding straight from the train.","why_take_it":"Take it when the bicycle is part of the trip: the train removes much of the awkward station-to-station logistics and makes regional cycling the core experience.","short_summary":"B.B.BASE is JR East’s bicycle-focused Joyful Train for the Boso Peninsula, with dedicated racks that let riders carry bicycles without disassembly and multiple leisure routes from Tokyo."},"archetypes":[{"key":"design","name":"Design","slug":"design"},{"key":"themed","name":"Themed","slug":"themed"},{"key":"excursion","name":"Excursion","slug":"excursion"}],"provenance":{"sources":[{"url":"https://www.jreast.co.jp/en/multi/joyful/bbbase.html","name":"JR East Joyful Trains","authority":"primary","last_observed_at":"2026-09-09T04:00:23.400173+00:00"}],"source_count":1,"accepted_fact_count":1,"latest_fact_observed_at":"2026-09-09T04:00:23.400173+00:00"},"data_rights":{"note":"Commercial eligibility is a separate governed flag; public machine readability does not grant unrestricted commercial reuse.","public_read":true,"commercial_reuse_eligible":false},"entity_type":"TrainExperience","publication":{"tier":"premium","checked_at":"2026-09-11T12:44:25.229888+00:00","machine_publishable":true,"publication_contract_version":"v1"},"canonical_id":"urn:train-experience:881e4bda-6a29-4163-a8b1-24497ae76df7","decision_data":{"price":{"currency":"JPY","confidence":0.82,"price_from":null,"price_basis":"Fare varies by route, seat class and operating date; no single representative total is asserted without a route-specific current fare lookup.","pass_accepted":null,"dynamic_pricing":null,"last_observed_at":"2026-09-09T04:00:23.400173+00:00","last_verified_at":"2026-09-09T04:00:23.400173+00:00","typical_price_max":null,"typical_price_min":null,"pass_supplement_max":null,"pass_supplement_min":null,"reservation_fee_max":null,"reservation_fee_min":null},"scores":{"food":2,"notes":"Hybrid editorial scoring grounded in official bicycle-oriented design and Boso route network.","value":4,"family":3,"scenic":3,"comfort":4,"romance":2,"confidence":0.75,"uniqueness":5,"bucket_list":4,"photography":3,"evaluated_at":"2026-09-09T04:00:23.400173+00:00","accessibility":4,"score_version":"editorial_v1","train_character":5,"evaluation_method":"hybrid"},"booking":{"notes":"All seats are reserved. 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verify the current calendar for this route and train.","confidence":0.9,"availability":"seasonal","last_verified_at":"2026-09-09T04:00:23.400173+00:00"},{"month":4,"notes":"JR East Joyful Train: operates on selected published dates; verify the current calendar for this route and train.","confidence":0.9,"availability":"seasonal","last_verified_at":"2026-09-09T04:00:23.400173+00:00"},{"month":5,"notes":"JR East Joyful Train: operates on selected published dates; verify the current calendar for this route and train.","confidence":0.9,"availability":"seasonal","last_verified_at":"2026-09-09T04:00:23.400173+00:00"},{"month":6,"notes":"JR East Joyful Train: operates on selected published dates; verify the current calendar for this route and train.","confidence":0.9,"availability":"seasonal","last_verified_at":"2026-09-09T04:00:23.400173+00:00"},{"month":7,"notes":"JR East Joyful Train: operates on selected published dates; verify the current calendar for this route and train.","confidence":0.9,"availability":"seasonal","last_verified_at":"2026-09-09T04:00:23.400173+00:00"},{"month":8,"notes":"JR East Joyful Train: operates on selected published dates; verify the current calendar for this route and train.","confidence":0.9,"availability":"seasonal","last_verified_at":"2026-09-09T04:00:23.400173+00:00"},{"month":9,"notes":"JR East Joyful Train: operates on selected published dates; verify the current calendar for this route and train.","confidence":0.9,"availability":"seasonal","last_verified_at":"2026-09-09T04:00:23.400173+00:00"},{"month":10,"notes":"JR East Joyful Train: operates on selected published dates; verify the current calendar for this route and train.","confidence":0.9,"availability":"seasonal","last_verified_at":"2026-09-09T04:00:23.400173+00:00"},{"month":11,"notes":"JR East Joyful Train: operates on selected published dates; verify the current calendar for this route and train.","confidence":0.9,"availability":"seasonal","last_verified_at":"2026-09-09T04:00:23.400173+00:00"},{"month":12,"notes":"JR East Joyful Train: operates on selected published dates; verify the current calendar for this route and train.","confidence":0.9,"availability":"seasonal","last_verified_at":"2026-09-09T04:00:23.400173+00:00"}],"highlights":[],"price_band":null,"traveller_fits":[{"key":"adventure_travellers","name":"Adventure travellers","reason":"Purpose-built bicycle transport makes it unusually useful for active regional travel.","confidence":0.82,"suitability":5},{"key":"rail_enthusiasts","name":"Rail enthusiasts","reason":"Special-purpose rolling stock and route variants make the train itself interesting.","confidence":0.82,"suitability":4},{"key":"solo","name":"Solo travellers","reason":"Bike racks remove much of the handling complexity for an independent cyclist.","confidence":0.82,"suitability":4}],"duration_minutes":110,"onboard_features":[{"key":"luggage_space","name":"Luggage space","notes":"Interior is configured with extra room for cyclists and gear.","state":"yes","quality":4,"confidence":0.93,"last_verified_at":"2026-09-09T04:00:23.400173+00:00"},{"key":"bike_transport","name":"Bike transport","notes":"Dedicated onboard racks allow bicycles to be carried without disassembly.","state":"yes","quality":5,"confidence":0.93,"last_verified_at":"2026-09-09T04:00:23.400173+00:00"}],"discovery_intents":[],"reservation_requirement":null},"contract_version":"train-experience-graph/v1","operational_status":"active","agent_context":{"contract_version":"far-by-rail/journey-v1","id":"881e4bda-6a29-4163-a8b1-24497ae76df7","slug":"bbbase","name":"B.B.BASE","summary":"B.B.BASE is JR East’s bicycle-focused Joyful Train for the Boso Peninsula, with dedicated racks that let riders carry bicycles without disassembly and multiple leisure routes from Tokyo.","operator":{"name":"JR East"},"countries":[{"slug":"japan","name":"Japan"}],"archetypes":[{"slug":"design","name":"Design"},{"slug":"themed","name":"Themed"},{"slug":"excursion","name":"Excursion"}],"primary_family":"design","landscapes":[],"route_summary":"B.B.BASE serves several cycling destinations across the Boso Peninsula rather than one fixed railway route. 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This source supports the linked observation, not every booking or price field on the record. Match property, value, validity and product scope before citing a specific field."},"price":{"fact_id":"urn:farbyrail:fact:94139638-d4b0-4d8b-8348-61f91af2cf78","property_key":"official_product_summary_2026","scope":"profile_reference_not_all_fields","source_url":"https://www.jreast.co.jp/en/multi/joyful/bbbase.html","caveat":"Evidence association only. This source supports the linked observation, not every booking or price field on the record. Match property, value, validity and product scope before citing a specific field."}},"policy":{"read_only":true,"scope_note":"An accepted observation is not proof that all current profile fields or all route variants match it. Check property, value, validity and product scope before citing a field. A profile reference alone does not support every profile field.","unknown_is_not_no":true,"published_experiences_only":true,"raw_source_content_included":false,"profile_evidence_is_not_field_proof":true,"withheld_values_are_not_absent_facts":true}}},"published_semantics":{"note":"Additive semantic view of this same record. Existing fields above are unchanged.","contract_version":"far-by-rail/journey-v1","duration":{"minutes":110,"unit":"minutes","precision":"approximate","scope":"route_variant","route_name":"B.B.BASE Uchibo outbound: Ryogoku–Wadaura","route_slug":"bbbase-uchibo-ryogoku-wadaura","precision_note":"Length varies by cycling course."},"overnight":{"status":"unknown","basis":"none"},"pricing_status":"unknown","booking_action_kind":"official","primary_family":"design","provenance_returned":true}}