page_title: List of trolleybus systems in the United States
hierarchical_section_title: List of trolleybus systems in the United States
caption_attribution_description: English: New (2004) Massachusetts Bay Transportation Authority Neoplan trolleybus number 4120, operating near Harvard Square in Cambridge, Massachusetts. Note unique left-side door to allow passenger loading in Harvard Square tunnel.
context_page_description: This is a list of trolleybus systems in the United States by State. It includes all trolleybus systems, past and present. About 65 trolleybus systems have existed in the U.S. at one time or another. In this list, boldface type in the "location" column and blue background colored row indicates one of the five U.S. trolleybus systems still in operation.
context_section_description: This is a list of trolleybus systems in the United States by State. It includes all trolleybus systems, past and present.  About 65 trolleybus systems have existed in the U.S. at one time or another. In this list, boldface type in the "location" column and blue background colored row indicates one of the five U.S. trolleybus systems still in operation.
caption: Massachusetts Bay Transportation Authority (Greater Boston area) Neoplan trolleybus #4120, photographed as new in 2004.
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