A Train

A Train can refer to:

A sports nickname for:

A-train (satellite constellation)

The A-train (from Afternoon Train) is a satellite constellation of six Earth observation satellites of varied nationality in sun-synchronous orbit at an altitude of 705 km (438 mi) above the Earth.

The orbit, at an inclination of 98.14°, crosses the equator each day at around 1:30 pm solar time, giving the constellation its name; the "A" stands for "afternoon;" and crosses the equator again on the night side of the Earth, at around 1:30 am.

They are spaced a few minutes apart from each other so their collective observations may be used to build high-definition three-dimensional images of the Earth's atmosphere and surface.

Satellites

Active

The train, as of July 2014, consists of six active satellites:

A-train (Denton County Transportation Authority)

The A-train is a 21-mile (34 km) commuter rail line in Denton County, Texas, United States that parallels Interstate 35E and acts as an extension with the Dallas Area Rapid Transit Green Line at Trinity Mills Station in Carrollton. It is operated by the Denton County Transportation Authority (DCTA) and serves Denton County. It opened June 20, 2011.

History

A formal Alternatives Analysis study conducted in 2004–2005, which included extensive community and citizen involvement, identified the proposed rail line as the best and most cost-effective mobility solution for Denton County and the region. It cited the impacts of projected population growth, growing safety, traffic congestion and air quality concerns, as well as the need to improve access to Denton County’s vital health care facilities and three major college and university campuses.

In May 2005, the DCTA Board of Directors approved the study’s recommendation to construct the rail alignment on east side of I-35E using an existing railroad corridor. The DCTA worked closely with the Federal Transit Administration (FTA) to meet the Federal and local regulatory requirements. In March 2008, the DCTA Board of Directors approved the Final Environmental Impact Determination that detailed the proposed measures to mitigate the environmental impacts of the rail project and the Regional Transportation Council approved funding of in August 2008. Federal funds were not used in the construction of the rail link.