As Metro Manila is put in lockdown, we inspect the northern borders.<br />In North Luzon Expressway, vehicles can freely go to Marilao, Bulacan, as the exit does not have a checkpoint.<br />Vehicles can also freely go back to the city without showing documents through the Balintawak exit.<br />Ralf Rivas reports: https://www.rappler.com/nation/254567-watch-not-enough-checkpoints-north-luzon-expressway-lockdown<br /><br />#MMLockdown