Especially the first part of the first episode they showed ( two half hour episodes ) . Acetylene torpedoes ! Something went wrong at an acetylene place , and sparked a fire , and all those tanks took off like missiles ! I do n't know why they did n't shut down traffic both ways instead of just one .
According to the above context, answer the following question.
What would be the reason that shutting down the traffic in both ways would be preferrable ?


It is unsafe for people to be so close to the flames and unpredictable tanks .