The date of the speed trap marathon is a closely-guarded secret. All available radar guns will be deployed to catch errant motorists.
Although speeding is often trivialised, excess speed plays a role in 30% of fatal road traffic accidents.
Around 300 people die on Belgium's roads as a direct result of speeding.
Via the website ikflitsmee.be (NL/F/D) you too can indicate the locations at which you would like a police speed trap to be set up.