The Manila North Tollways in The Philippines will implement weigh-in-motion (WIM) devices at the North Luzon Expressway (NLEX) for checking violations of anti-overloading laws.

WIM is a computerised system that process and prints vehicles’ axle and load weights data without flagging down vehicles for weigh-in, traffic technology today reports.

The sensor-equipped system implemented by The Manila North Tollways can measure the weight of trucks moving along the toll way.

The system will remove the random profiling of trucks so that compliant trucks are not stopped, thereby reducing delay times.

The arrangement requires the assignment of specific truck lanes at the Balintawak, Bocaue, and San Fernando toll plazas of the NLEX where the WIM unit will be installed.

In addition, cameras will be installed for monitoring the trucks as they leave the toll booths.

Five units of the WIM equipment will be installed on the truck lanes and will be in operation from 23 July 2009.