Comments on: On 5/15/2016 westbound ES44AC 2823 moves through the turnouts on the very short piece of single track at Stewarttown Mile 26.6 on CN’s Halton Sub just west of of Georgetown. I know that you foam..er i mean fans out there will know the answers to these questions. Why is there a broom on the front of the locomotive? What is the reason for the red light above one of the ditch lights? What are the white objects on the roof of the locomotive for?

By: Stephen C. Host

Stephen C. Host — Wed, 17 Jun 2026 20:00:54 +0000

PTC testing began on CN in 2015

By: Isaac Bryson

Isaac Bryson — Wed, 17 Jun 2026 19:30:11 +0000

Why would a unit have PTC controls in 2016

By: cp5756

cp5756 — Sun, 14 Jun 2026 21:30:26 +0000

air conditioning is incorrect. the white dome is a GPS dome, a part of the whole package of roof antennae (the white strips are for positive train control)

By: Steamer

Steamer — Sun, 14 Jun 2026 03:40:10 +0000

For sweeping snow from track switches, while runing in reverce as a DPU and air conditioning and train antenna. Cheers Rob