public function exportarTraficos($id)
 {
     $traficoItem = Trafico::findOrFail($id);
     $view = \View::make('Traficos.PDFTraficos', compact('traficoItem'))->render();
     $pdf = \App::make('dompdf.wrapper');
     $pdf->loadHTML($view);
     return $pdf->stream('invoice.pdf');
 }