def calculate_max_velocity(engine_speed_at_max_power, max_speed_velocity_ratio
    ):
    """
    Calculates max vehicle velocity [km/h].

    :param engine_speed_at_max_power:
        Rated engine speed [RPM].
    :type engine_speed_at_max_power: float

    :param max_speed_velocity_ratio:
        Maximum speed velocity ratio of the gear box [h*RPM/km].
    :type max_speed_velocity_ratio: float

    :return:
        Max vehicle velocity [km/h].
    :rtype: float
    """
    return engine_speed_at_max_power / max_speed_velocity_ratio
