While there’s been a lot of attention given to how much
pollution heavy trucks put into the air, there hasn’t much discussion about
trains – until now.
The Washington Post reported that government scientists
have been seriously underestimating the amount of soot and nitrogen oxide
generated by locomotives.
According to the Post, the scientists have long used
faulty estimates of how much diesel fuel locomotives use, which has been causing
them to underestimate emissions.
And although heavy trucks presently pollute more than
trains, the paper says new emission-control standards for trucks will change
that, and that by 2030, locomotives in their current state could emit nearly
twice as much soot as trucks.