Almost all work trains are diesel powered. That allows the work crews to power down the 3rd rail while they are working and still be able to move the train
Edward Miessner You smell the diesel for like a couple of seconds once it passes by and the it dissapates. Nothing much of a health hazard for the benefits of being able to move it without the third rail during outages.
That's n1, it's mainly assigned to the south Brooklyn railway, alongside n2, which is currently a rarely used freight spur for delivering new equipment and transporting retired equipment off property, as it is only one of two connections between the subway and the national rail network via either the LIRR bay ridge branch or by New York New Jersey rail, the only car float operation across upper new York bay. The South Brooklyn railway sees three trains... per month. Although N1 and N2 are used on the subway when not needed on the SBK, and N1 and N2 are not r77s, they are r47s. The South Brooklyn railway is also the only line capable of transferring Staten Island railroad cars to the main subway network via car float, the reason being that the r44s on the sir can only be overhauled at the coney Island shops.
