After seeing the video, I think it means that she can give up, or continue in a relationship that puts her in a constant state of being put in jeopardy of her heart being broken and being another 'casualty'. The victims of the accident were on the pavement, representing her in this relationship that leads to continually feeling as if it's killing her on the inside, over and over: chasing the pavement, or finding herself over and over the victim of the relationship 'accident'.