Keyword · US · updated 2026-09-28
when was the traffic signal invented
- Monthly searches
- 720
- CPC
- $0.00
- Competition
- 0
Also searched
- who invented traffic lights 12,100
- who invented the traffic light 12,100
- traffic light invention 2,400
- traffic lights inventor 2,400
Monthly average for US, from the Google Ads API: the same numbers you'd see in Google Ads.
Get this inside your AI assistant
Connect seodata.dev over MCP and Claude, ChatGPT or Muse can look up any keyword while they work. Ask in plain language, get these numbers back.
https://mcp.seodata.dev/mcp
20 free lookups a day, no account needed.
Related keywords
Keywords with overlapping search results. Similar volume and high overlap means the same search intent, so you can target either.
| Keyword | Volume | CPC | Overlap |
|---|---|---|---|
| who invented traffic lights | 12,100 | $0.00 | 17/20 |
| who invented the traffic light | 12,100 | $0.00 | 16/20 |
| traffic light invention | 2,400 | $0.00 | 20/20 |
| traffic lights inventor | 2,400 | $0.00 | 17/20 |
| when were traffic signals invented | 1,300 | $0.00 | 18/20 |
| when was traffic light invented | 720 | $0.00 | 18/20 |
| when was the traffic light invented | 720 | $0.00 | 16/20 |
| first traffic signal in us | 480 | $0.00 | 15/20 |
| what year was the traffic light invented | 90 | $0.00 | 16/20 |
| original traffic signal | 50 | $0.00 | 16/20 |
For AI agents: query this keyword over HTTP
$ curl "https://api.seodata.dev/v1/keyword?q=when+was+the+traffic+signal+invented&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