
    Write a function that activates specific operational states in a delivery vehicle's status register by setting all even-positioned bits in its binary status code. The function should take the vehicle's current status code as input and return a modified status code with all even bits set to 1, while preserving the original values of odd-positioned bits, to ensure proper fleet management system operation.
    

    
def even_bit_set_number(n):
    """
    Write a function that activates specific operational states in a delivery vehicle's status register by setting all even-positioned bits in its binary status code. The function should take the vehicle's current status code as input and return a modified status code with all even bits set to 1, while preserving the original values of odd-positioned bits, to ensure proper fleet management system operation.
    

    """
def even_bit_set_number(n):
    """
    Write a function that activates specific operational states in a delivery vehicle's status register by setting all even-positioned bits in its binary status code. The function should take the vehicle's current status code as input and return a modified status code with all even bits set to 1, while preserving the original values of odd-positioned bits, to ensure proper fleet management system operation.
    

    """
    count = 0
    res = 0
    temp = n
    while temp > 0:
        if count % 2 == 1:
            res |= 1 << count
        count += 1
        temp >>= 1
    return n | res