EnviroCAB
Open-knowledge reference entry

EnviroCAB is a taxicab service provider based in Arlington County, Virginia, which provides service exclusively with a fleet of hybrid electric vehicles. When the company began operations in February 2008 it became the first all-hybrid taxicab fleet in the United States, and the first carbon negative taxicab company in the world.
History
In September 2007 the Arlington County Board authorized EnviroCAB, then a new taxi company, to operate with an all-hybrid fleet of 50 vehicles. In addition, the Board authorized existing companies permission to add 35 hybrid taxis. The introduction of green taxis is part of a county campaign known as Fresh AIRE, or Arlington Initiative to Reduce Emissions. AIRE aims to cut production of greenhouse gases from county buildings and vehicles by 10% by 2012.
Description
EnviroCAB taxi fleet consist of Toyota Priuses, Toyota Camry Hybrids, Toyota Highlander Hybrids, and Ford Escape Hybrids.
Carbon footprint
The company claims to be the first carbon-negative taxicab company in the world, as it will completely offset its own emissions by purchasing "clean-source" offset credits. Also, EnviroCAB expects to offset the emissions of 100 of the approximately 685 non-hybrid taxis operating in Arlington by March 2008.
Begin with the source’s own compact description: “EnviroCAB” is open-knowledge reference entry. The dossier treats that line as a proposition to test through EnviroCAB, Open-knowledge and entry, not as a finished interpretation.
Why this record matters
The phrase “open-knowledge reference entry” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jun 15, 2026. The linked authority identifier is Q5380979. None of the 1 selected statements returned an explicit reference. The first chronological checks are 2008, 2007 and 2012.
Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “EnviroCAB”, its source revision and the description used here.
- Expand the search: follow EnviroCAB primary sources, EnviroCAB archive and EnviroCAB research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “EnviroCAB”?
- What terminology or title could unlock a more precise catalogue search?
- Which cited source is closest to the event, object or claim?
Search terms from this dossier
This entry incorporates text from “EnviroCAB” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.