Alternate Concepts

{{Infobox company

| name = Alternate Concepts, Inc.

| logo = Alternate Concepts Logo.png

| founded = {{start date and age|1989}}

| hq_location = One Liberty Square

| hq_location_city = Boston, Massachusetts

| hq_location_country = United States

| website = {{url|acitransportation.com}}

}}

Alternate Concepts, Inc. (ACI) is a transit management company within the United States. It is currently headquartered in Boston, Massachusetts and provides services to four rail authorities.{{Cite web|title=History {{!}} Alternate Concepts, Inc - Transit Management Systems|url=http://www.acitransportation.com/history.html|access-date=2021-04-02|website=www.acitransportation.com}} Between 2003 and 2014, ACI also operated the Massachusetts Bay Transportation Authority's commuter rail system.{{Cite web|last=Reporter|first=Christian M. Wade Statehouse|title=Guilty plea revives questions about Keolis' bid for commuter rail|url=https://www.salemnews.com/news/state_news/guilty-plea-revives-questions-about-keolis-bid-for-commuter-rail/article_3de1a4d1-c626-57f4-9ead-108683d1f485.html|access-date=2021-04-02|website=Salem News|language=en}} Additionally, Alternate Concepts is planned to operate MTA Maryland's Purple Line.{{Cite web|date=2020-11-30|title=Maryland reaches resolution for Purple Line project|url=https://www.railjournal.com/regions/north-america/maryland-reaches-resolution-for-purple-line-project/|access-date=2021-04-02|website=International Railway Journal|language=en}}