In "Fahrenheit 451," why does the government allow the men on railroad tracks when it's opposed to readers, thinkers and walkers?
The government does not see these men as a real threat because they are removed from the city and they are so few. The government has control of the masses and that is the ultimate goal.
Men living along the railroad tracks also paints quite a picture for those who are obedient. The obedient live lives with all the creature comforts they can imagine, right down the floor to ceiling televisions in which they are active participants. Why would any of those citizens want to give up their homes to live along the railroad tracks?
The government does not officially even recognize the existence of these men. In fact when Montag finds his way there he notices that the chase for him has turned on some innocent bystander and the news is changed to reflect that Montag did not get away.
The government wins either way. People don't want to live homeless existences and they can't know for sure it's anyone important because history is changed to reflect what the government chooses.