Assignia Infraestructuras to provide acoustic protection for Madrid-Levante HSR November 6, 2015 | Europe News Spanish high-speed rail (HSR) infrastructure manager ADIF Alta Velocidad (Adif-AV) has awarded a EUR7.5-million contract to Spain-based Assignia Infraestructuras for installing acoustic protection equ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password