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r/cahsr↗

California High Speed Rail

A subreddit to discuss the California High Speed Rail project and its constituent heavy rail improvement programs

7.5k subscribers48 posts / mo in Sep 202636 authors / mosince 2017

r/cahsr has 7.5k members (+32% over the last 12 months). It gets about 48 posts a month from 36 people. Top topics: California High-Speed Rail, Public Transit in California and Railroad Drives.

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Size and growth

How r/cahsr has grown

r/cahsr

Subscriber growth

Subscribers over time

+32%in 12 months · +5.0% in 3 months · +1.6% in 1 month
Oct 20267.5k
Growing7.5k subscribers
Data since Apr 2020Live · through Oct 2026
r/cahsr

Monthly activity

Posts, comments and authors per month

+23%vs Sep 2025 · −23% last 3 months vs the 3 before
Sep 202648
BusierPeaked at 78 in Jun 2025
Data through Sep 2026 · October usually lands mid-November

What people talk about

Topics and brands on r/cahsr

Top topics

Share of the subreddit's posts

  1. California High-Speed Rail31%
  2. Public Transit in California2.0%
  3. Railroad Drives1.9%
  4. Road Closures and Projects1.5%
  5. North American Bridges0.8%

Brands people mention

Most-mentioned brands and sites, last 12 months

  1. Streetsblog
  2. Politico
  3. Fresno Bee
  4. kcra
  5. CBS News

The full report

Everything else about r/cahsr

Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.

Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research