A school bus fire in Montreal has triggered the immediate inspection of 1,200 Lion buses, placing electric bus fleets throughout Quebec in limbo. And until those assessments have been completed, several school bus routes will suffer. If similar precautions are taken with Ottawa's fleet of electric school buses, how many routes throughout the National Capital Region could be affected? CTV’s Dylan Dyson delivers the details in Hour 4. Then, we preview tonight’s CTV Ottawa supper-hour newscast with Jackie Perez and Stefan Keyes. Plus, if news breaks, you’ll hear it live on CFRA’s Ottawa Now.