BMTC fare hike: Commuters question service value as Bengaluru faces severe traffic snarls along Tumakuru Road following a rock concert at BIEC grounds. Bengaluru: Traffic movement along Tumakuru Road was slow on Saturday night following a concert by American rock band Guns N’ Roses at the Bangalore International Exhibition Centre (BIEC) grounds..The concert, which began at 7 pm, concluded around 10 pm.