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¶

February 11 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',
  'Baldwin Park Schedule'],
 '2026-01-14': ['Bay Area 511 Mountain View Community Shuttle Schedule',
  'Victor Valley 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