def calculate_raw_frontal_area(vehicle_height, vehicle_width):
    """
    Calculates raw frontal area of the vehicle [m2].

    :param vehicle_height:
        Vehicle height [m].
    :type vehicle_height: float 

    :param vehicle_width: 
        Vehicle width [m].
    :type vehicle_width: float

    :return:
        Raw frontal area of the vehicle [m2].
    :rtype: float
    """
    return vehicle_height * vehicle_width
