Stop Frequency and Collinearity Screen - HQ Transit Corridor & Major Bus Stop Explorer

import pandas as pd
from update_vars import PUBLIC_FILE_PATH, analysis_date
import datetime as dt
import calitp_data_analysis.magics
import lookback_wrappers

Evaluating Collinearity¶

Transit agencies have wide flexibility in designing their networks. Where we determine multiple routes are providing a combined service, we combine their frequencies on the shared segment. See our README for a longer explaination.

We use combined or single-route frequencies as appropriate for our spatial pathway for locating bus intersection Major Transit Stops.

The branching pathway uses exclusively single-route frequencies, so we always calculate both.

%%capture_parameters
human_date = dt.date.fromisoformat(analysis_date).strftime('%B %d %Y (%A)')
human_date

Current Analysis Date¶

January 14 2026 (Wednesday)

If we are missing data on that date for a particular operator, we will patch in data from the previous three months. Currently patching in:

lookback_wrappers.read_published_operators(analysis_date)

{'2025-12-17': ['Bay Area 511 South San Francisco Shuttle Schedule',
  'eTrans Schedule Remix',
  'Lassen Schedule',
  'Long Beach Schedule',
  'Baldwin Park Schedule',
  'Mountain Transit Schedule',
  'Redwood Coast Schedule',
  'Lake Schedule',
  'Mendocino Schedule',
  'Redding Schedule'],
 '2025-10-15': ['Bay Area 511 Angel Island-Tiburon Ferry Schedule',
  'Nevada County Schedule',
  'El Monte Schedule'],
 '2025-11-05': ['Trinity Schedule',
  'Mariposa Grove Shuttle Schedule',
  'UCSC Schedule',
  'Amtrak San Joaquins Schedule']}

Single and Multi-Route Frequencies¶

Example Data (first 10 rows)¶

pd.read_csv(f"{PUBLIC_FILE_PATH}max_arrivals_by_stop.csv").head(10)

Download full single and multi-route csv

Single-Route Frequencies Only¶

Example Data (first 10 rows)¶

pd.read_csv(f"{PUBLIC_FILE_PATH}max_arrivals_by_stop_single_route.csv").head(10)

Download full single-route only csv