{"module": "train_vibration_source", "brand": "DeepMap AI", "corridors": {"union_pacific_utah": {"corridor_name": "Union Pacific Overland Route (Utah)", "lat": 40.77, "lon": -111.9, "avg_trains_per_day": 40, "features": {"tvs_train_detection_confidence": 0.0, "tvs_axle_load_tons": 0.0, "tvs_train_speed_kmh": 0.0, "tvs_n_cars_estimate": 0.0, "tvs_dominant_frequency_hz": 0.0, "tvs_spectral_bandwidth_hz": 0.0, "tvs_interferometric_dvv_pct": 0.0, "tvs_green_function_snr": 0.0, "tvs_substation_frequency_coupling": 0.0, "tvs_rail_corridor_distance_km": 0.0, "tvs_repeat_interval_min": 0.0, "tvs_ground_impedance_proxy": 0.0, "tvs_seasonal_velocity_change_pct": 0.0, "tvs_composite_source_score": 0.0, "tvs_data_real": 0.0}, "feature_count": 15}, "bnsf_california": {"corridor_name": "BNSF Transcon (Cajon Pass, CA)", "lat": 34.05, "lon": -117.75, "avg_trains_per_day": 70, "features": {"tvs_train_detection_confidence": 0.0, "tvs_axle_load_tons": 0.0, "tvs_train_speed_kmh": 0.0, "tvs_n_cars_estimate": 0.0, "tvs_dominant_frequency_hz": 0.0, "tvs_spectral_bandwidth_hz": 0.0, "tvs_interferometric_dvv_pct": 0.0, "tvs_green_function_snr": 0.0, "tvs_substation_frequency_coupling": 0.0, "tvs_rail_corridor_distance_km": 0.0, "tvs_repeat_interval_min": 0.0, "tvs_ground_impedance_proxy": 0.0, "tvs_seasonal_velocity_change_pct": 0.0, "tvs_composite_source_score": 0.0, "tvs_data_real": 0.0}, "feature_count": 15}, "csx_ohio": {"corridor_name": "CSX Water Level Route (Ohio)", "lat": 39.96, "lon": -82.99, "avg_trains_per_day": 35, "features": {"tvs_train_detection_confidence": 0.0, "tvs_axle_load_tons": 0.0, "tvs_train_speed_kmh": 0.0, "tvs_n_cars_estimate": 0.0, "tvs_dominant_frequency_hz": 0.0, "tvs_spectral_bandwidth_hz": 0.0, "tvs_interferometric_dvv_pct": 0.0, "tvs_green_function_snr": 0.0, "tvs_substation_frequency_coupling": 0.0, "tvs_rail_corridor_distance_km": 0.0, "tvs_repeat_interval_min": 0.0, "tvs_ground_impedance_proxy": 0.0, "tvs_seasonal_velocity_change_pct": 0.0, "tvs_composite_source_score": 0.0, "tvs_data_real": 0.0}, "feature_count": 15}, "norfolk_southern_va": {"corridor_name": "Norfolk Southern Crescent Corridor (VA)", "lat": 37.27, "lon": -79.94, "avg_trains_per_day": 30, "features": {"tvs_train_detection_confidence": 0.0, "tvs_axle_load_tons": 0.0, "tvs_train_speed_kmh": 0.0, "tvs_n_cars_estimate": 0.0, "tvs_dominant_frequency_hz": 0.0, "tvs_spectral_bandwidth_hz": 0.0, "tvs_interferometric_dvv_pct": 0.0, "tvs_green_function_snr": 0.0, "tvs_substation_frequency_coupling": 0.0, "tvs_rail_corridor_distance_km": 0.0, "tvs_repeat_interval_min": 0.0, "tvs_ground_impedance_proxy": 0.0, "tvs_seasonal_velocity_change_pct": 0.0, "tvs_composite_source_score": 0.0, "tvs_data_real": 0.0}, "feature_count": 15}, "cn_chicago": {"corridor_name": "CN Chicago Gateway (IL)", "lat": 41.88, "lon": -87.63, "avg_trains_per_day": 55, "features": {"tvs_train_detection_confidence": 0.0, "tvs_axle_load_tons": 0.0, "tvs_train_speed_kmh": 0.0, "tvs_n_cars_estimate": 0.0, "tvs_dominant_frequency_hz": 0.0, "tvs_spectral_bandwidth_hz": 0.0, "tvs_interferometric_dvv_pct": 0.0, "tvs_green_function_snr": 0.0, "tvs_substation_frequency_coupling": 0.0, "tvs_rail_corridor_distance_km": 0.0, "tvs_repeat_interval_min": 0.0, "tvs_ground_impedance_proxy": 0.0, "tvs_seasonal_velocity_change_pct": 0.0, "tvs_composite_source_score": 0.0, "tvs_data_real": 0.0}, "feature_count": 15}}, "n_corridors": 5, "n_features": 15, "feature_names": ["tvs_train_detection_confidence", "tvs_axle_load_tons", "tvs_train_speed_kmh", "tvs_n_cars_estimate", "tvs_dominant_frequency_hz", "tvs_spectral_bandwidth_hz", "tvs_interferometric_dvv_pct", "tvs_green_function_snr", "tvs_substation_frequency_coupling", "tvs_rail_corridor_distance_km", "tvs_repeat_interval_min", "tvs_ground_impedance_proxy", "tvs_seasonal_velocity_change_pct", "tvs_composite_source_score", "tvs_data_real"], "physics": {"axle_load_kn": 294.3, "dominant_band_hz": [5.0, 30.0], "surface_wave_decay_n": 0.75, "attenuation_alpha_per_km": 0.03, "green_function_snr_improvement": "sqrt(N) stacking"}, "elapsed_s": 0.0, "dvv_validation": "UNVALIDATED -- the production dv/v pipeline failed an internal positive-control audit (Ridgecrest 2019) on 2026-10-14; values are not validated measurements", "dvv_validation_status": "UNVALIDATED", "dvv_validated": false, "dvv_suspended_since": "2026-10-14", "demo": true, "synthetic": true, "data_real": 0, "demo_notice": "DEMO OUTPUT: computed from synthetic or demonstration input to show what this endpoint returns. It is not a measurement, a detection or a prediction, and no number in it describes a real place or event."}