keyword

bay area rapid transit

Monthly search volume and cost-per-click data for "bay area rapid transit" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=bay+area+rapid+transit&country=us" +--------------+------------------+ | volume | 165,000 | | cpc | $0.24 | | competition | 0.03 | | country | US | | updated | 2026-06-19 | +--------------+------------------+

All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
bart transit	165,000	$0.24	20/20
bart	165,000	$0.24	16/20
bart san francisco	8,100	$2.69	20/20
bart train	6,600	$0	18/20
bart sf	4,400	$0.88	19/20
bart gov	2,900	$0	15/20
sf bart	1,600	$0	20/20
bay area rapid transit system	880	$0	13/20
bart bay area rapid transit	210	$0	20/20
san francisco bay area rapid transit district	90	$0	14/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://api.seodata.dev/v1/keyword?q=bay+area+rapid+transit&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt