BENGALURU: Commuters had a tough time navigating city roads owing to waterlogging at several places following heavy rains during peak hours on Monday evening. T. Those using private vehicles witnessed traffic snarls in the central business district and other parts of the city. Traffic pile-ups were reported at B Narayanapura Main Road, Marathahalli, Kadubeesanahalli, Varthur Kodi, Krishnarajapuram Outer Ring Road, SJP Road, Mahatma Gandhi Road, Queen’s Road and several other locations across.