Local Area Road Classifications
The following information was obtained from the City of Toronto website, Transportation Section:
Port Union Road is a designated a 'minor arterial' road. The criterion for number of traffic lanes is - "Minimum number of peak period lanes (excluding bicycle lanes) - Two".
Port Union Road does not require widening to meet its current classification - no matter what you hear.
The full set of classification criteria and characteristics may be found here.
Readers who wish to verify this information, should visit the City of Toronto web site transportation section.
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