There are lots of helpful resources if you want to learn more about these issues, some good places to start are below:

Who is Metrolinx and what do they do? A great primer (though a little dated now) was done in 2014 by the Torontoist and is accessible by clicking here

Lakeshore east Rail Expansion Facebook Group

A moderated group that shares information and updates about the RER and local track-related issues.

METrolinx Links of Note:

• General info page on the Lakeshore East expansion project

• The Environmental Assessment Metrolinx conducted which outlines the environmental protections that need to be put in place as part of the RER

• A 2016 Environmental Project Report that outlines the planned track expansion

• RER Project Map - see what Metrolinx is planning for the the line and new stations

• Info on the proposed track electrification

Steve Munro’s Transit Blog

Old Riverdale BLOG

Note: this site is a great historic resource but hasn’t been updated since December 2018