Santo Domingo Metro Line 2B to begin testing in April 2016 February 10, 2016 | Latin America News Operational testing on the Line 2B extension of Santo Domingo Metro, also known as El Metro, is scheduled to begin in April 2016. The 4.1-km extension is being constructed at an estimated cost of USD3... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password