Motorists and commuters were stranded for hours in traffic, yesterday, following a gridlock caused by an upsurge of tankers along the Oshodi-Apapa Expressway that obstructed vehicular movement and blocked access and other link roads. After several months of respite, gridlock returned last week as tankers took over the Oshodi-Apapa Expressway from the Otto Wharf-Kirikiri axis, with traffic stretching as far as Mile 2 Bus Stop.