def identify_max_gear(speed_velocity_ratios):
    """
    Identifies the maximum gear of the gear box [-].

    :param speed_velocity_ratios:
        Speed velocity ratios of the gear box [h*RPM/km].
    :type speed_velocity_ratios: dict[int | float]

    :return:
        Maximum gear of the gear box [-].
    :rtype: int
    """
    return int(max(speed_velocity_ratios))
