just a question sirs,

those guys manning the speed radar in the expressways, do they change their locations frequently or do they just stay at one place all the time?

if they stay at one place all the time, say when entering bocaue exit like what i backread here, then we can just slow down when nearing the area/ areas where they usually hang-out.

im from bulacan and i use the NLEX all the time, but i only pass by 2-3 exits...

TIA