public String getRoadActionChar(ArrayList<Integer> start, ArrayList<Integer> end) {
        if (start.equals(end)) {
            return "";
        }
        for (int i = 0; i < m_Roads.size(); i++) {
            if (m_Roads.elementAt(i).getStart().equals(start) && m_Roads.elementAt(i).getFinal().equals(end)) {
                return (m_Roads.elementAt(i).getRoadActionChar());
            }
        }
        return "";
    }