keyword

cta rail

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

$ curl "https://api.seodata.dev/v1/keyword?q=cta+rail&country=us" +--------------+------------------+ | volume | 3,600 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-26 | +--------------+------------------+

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
chicago transit authority	22,200	$0.69	16/20
transit chicago	22,200	$1.57	16/20
cta chicago transit authority	22,200	$1.57	15/20
cta transit chicago	22,200	$1.57	14/20
chicago trains	22,200	$0.25	13/20
cta chicago	4,400	$0.34	15/20
cta trains	3,600	$0.11	20/20
cta train	3,600	$0.11	19/20
chicago train system	3,600	$0	16/20
train system chicago	3,600	$0.15	16/20

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=cta+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