
    In a city's bus network management system, develop a function that ensures all primary route segments (represented by even-positioned bits) are activated in the route status code. Given a binary route status code where each bit represents a route segment's availability (1 for active, 0 for inactive), modify the code to set all even-positioned bits to 1 while preserving the odd-positioned bits' original states.
    

    
def even_bit_set_number(n):
    """
    In a city's bus network management system, develop a function that ensures all primary route segments (represented by even-positioned bits) are activated in the route status code. Given a binary route status code where each bit represents a route segment's availability (1 for active, 0 for inactive), modify the code to set all even-positioned bits to 1 while preserving the odd-positioned bits' original states.
    

    """
def even_bit_set_number(n):
    """
    In a city's bus network management system, develop a function that ensures all primary route segments (represented by even-positioned bits) are activated in the route status code. Given a binary route status code where each bit represents a route segment's availability (1 for active, 0 for inactive), modify the code to set all even-positioned bits to 1 while preserving the odd-positioned bits' original states.
    

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