I was looking at Halifax Harbour Bridges' 2008-2009 Annual Report. I found it interesting to read. It says that in 2009 the will "conduct a study on the impact peak period tolling and one-way tolling might have on reducing congestion at the bridges". I know that one-way tolling may have some minor unintended consequences like shifting traffic patterns, but it otherwise seems like a good idea to me.
https://www.hdbc.ca/docs/2208-2009%2...20report-2.pdf