While passing a slew of directions to the Investigating Agency as well as the Courts with respect to the bail system prevalent in the country,on Monday, the Supreme Court held that an unexplained, avoidable and prolonged delay in concluding a trial, appeal or revision would be a factor for cA Bench comprising Justices Sanjay Kishan Kaul and M.M. Sundresh noted that it expects the Courts to comply with Section 309 of the Cr.P.C.,