Train Car Passenger Door Open

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor"><path fill="currentColor" d="M21 7H3c-1.1 0-2 .9-2 2v8h1a2 2 0 1 0 4 0h12a2 2 0 1 0 4 0h1V9a2 2 0 0 0-2-2M8 12H3V9h5zm6 4h-4V9h4zm7-4h-5V9h5z"/></svg>