PART II. MAIN THOROUGHFARES 31
Width of Thoroughfares 31
Special Types of Thoroughfares 34
Widening Old Streets 37
Unified Procedure for City, County and Borough 43
Specific Recommendations 44
Penn Avenue Artery 44
Forbes Street Artery 47
South Hills Artery 49
Outlying Thoroughfare Improvements (with special indices) 59