{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:NZ4Y2G6D7TEQIR6B4RNPXM7PHZ","short_pith_number":"pith:NZ4Y2G6D","schema_version":"1.0","canonical_sha256":"6e798d1bc3fcc90447c1e45afbb3ef3e45db38494d98904888c623e3c7db48af","source":{"kind":"arxiv","id":"1101.4771","version":1},"attestation_state":"computed","paper":{"title":"The Spatial Variability of Vehicle Densities as Determinant of Urban Network Capacity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Amin Mazloumian, Dirk Helbing, Nikolas Geroliminis","submitted_at":"2011-01-25T10:51:03Z","abstract_excerpt":"Due to the complexity of the traffic flow dynamics in urban road networks, most quantitative descriptions of city traffic so far are based on computer simulations. This contribution pursues a macroscopic (fluid-dynamic) simulation approach, which facilitates a simple simulation of congestion spreading in cities. First, we show that a quantization of the macroscopic turning flows into units of single vehicles is necessary to obtain realistic fluctuations in the traffic variables, and how this can be implemented in a fluid-dynamic model. Then, we propose a new method to simulate destination flow"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1101.4771","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2011-01-25T10:51:03Z","cross_cats_sorted":[],"title_canon_sha256":"f8faae7b5ee84651b45bdfb1591bf4e44376c8ad10e42062b95d25d7d344bae7","abstract_canon_sha256":"4907b65b0e039403739f2ac681d72061838baaf8933ca9d826c95deec2a3fd6f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:22:49.877884Z","signature_b64":"BEMl3jlGlswYeDUx/XqXoyUqpIHb7G4StweZMqXr5lqQwdH3msScsoYtVPvu1PCnyuz5T6ksh0xO+Ubi0Wq/Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6e798d1bc3fcc90447c1e45afbb3ef3e45db38494d98904888c623e3c7db48af","last_reissued_at":"2026-05-18T02:22:49.877282Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:22:49.877282Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Spatial Variability of Vehicle Densities as Determinant of Urban Network Capacity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.flu-dyn","authors_text":"Amin Mazloumian, Dirk Helbing, Nikolas Geroliminis","submitted_at":"2011-01-25T10:51:03Z","abstract_excerpt":"Due to the complexity of the traffic flow dynamics in urban road networks, most quantitative descriptions of city traffic so far are based on computer simulations. This contribution pursues a macroscopic (fluid-dynamic) simulation approach, which facilitates a simple simulation of congestion spreading in cities. First, we show that a quantization of the macroscopic turning flows into units of single vehicles is necessary to obtain realistic fluctuations in the traffic variables, and how this can be implemented in a fluid-dynamic model. Then, we propose a new method to simulate destination flow"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.4771","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1101.4771","created_at":"2026-05-18T02:22:49.877362+00:00"},{"alias_kind":"arxiv_version","alias_value":"1101.4771v1","created_at":"2026-05-18T02:22:49.877362+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.4771","created_at":"2026-05-18T02:22:49.877362+00:00"},{"alias_kind":"pith_short_12","alias_value":"NZ4Y2G6D7TEQ","created_at":"2026-05-18T12:26:37.096874+00:00"},{"alias_kind":"pith_short_16","alias_value":"NZ4Y2G6D7TEQIR6B","created_at":"2026-05-18T12:26:37.096874+00:00"},{"alias_kind":"pith_short_8","alias_value":"NZ4Y2G6D","created_at":"2026-05-18T12:26:37.096874+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/NZ4Y2G6D7TEQIR6B4RNPXM7PHZ","json":"https://pith.science/pith/NZ4Y2G6D7TEQIR6B4RNPXM7PHZ.json","graph_json":"https://pith.science/api/pith-number/NZ4Y2G6D7TEQIR6B4RNPXM7PHZ/graph.json","events_json":"https://pith.science/api/pith-number/NZ4Y2G6D7TEQIR6B4RNPXM7PHZ/events.json","paper":"https://pith.science/paper/NZ4Y2G6D"},"agent_actions":{"view_html":"https://pith.science/pith/NZ4Y2G6D7TEQIR6B4RNPXM7PHZ","download_json":"https://pith.science/pith/NZ4Y2G6D7TEQIR6B4RNPXM7PHZ.json","view_paper":"https://pith.science/paper/NZ4Y2G6D","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1101.4771&json=true","fetch_graph":"https://pith.science/api/pith-number/NZ4Y2G6D7TEQIR6B4RNPXM7PHZ/graph.json","fetch_events":"https://pith.science/api/pith-number/NZ4Y2G6D7TEQIR6B4RNPXM7PHZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NZ4Y2G6D7TEQIR6B4RNPXM7PHZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NZ4Y2G6D7TEQIR6B4RNPXM7PHZ/action/storage_attestation","attest_author":"https://pith.science/pith/NZ4Y2G6D7TEQIR6B4RNPXM7PHZ/action/author_attestation","sign_citation":"https://pith.science/pith/NZ4Y2G6D7TEQIR6B4RNPXM7PHZ/action/citation_signature","submit_replication":"https://pith.science/pith/NZ4Y2G6D7TEQIR6B4RNPXM7PHZ/action/replication_record"}},"created_at":"2026-05-18T02:22:49.877362+00:00","updated_at":"2026-05-18T02:22:49.877362+00:00"}