https://www.renewcanada.net/study-launched-new-quebec-city-levis-link/
https://www.cbc.ca/news/canada/montreal/quebec-city-third-link-tramway-1.6029933 The 6 lane tunnel option.
"Legault’s original proposal for a six-lane, $10-billion tunnel was downsized to a four-lane tunnel with two of those lanes reserved for public transit during rush hours. He said he would leave it to the studies’ recommendations on how to divide the tunnel." https://montrealgazette.com/news/local-news/final-say-on-quebec-levis-tunnel-will-be-political-decision-legault-insists