keyword

metro rail

Monthly search volume and cost-per-click data for "metro rail" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=metro+rail&country=us" +--------------+------------------+ | volume | 12,100 | | cpc | $0.98 | | competition | 0.03 | | country | US | | updated | 2026-06-28 | +--------------+------------------+

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
metro rail transit	18,100	$0.6	13/20
metrorail	12,100	$1.34	18/20
metro hours	12,100	$0.34	13/20
metro train	8,100	$0.44	20/20
metro trains	8,100	$0.44	19/20
metrorail station	3,600	$0.48	13/20
metro rail train	480	$0.84	13/20
metro railway	480	$0.84	13/20
metro rail info	170	$0.05	13/20
rail metro	30	$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=metro+rail&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