Money paid to police along the road

Currently waiting for a response from Ministry of Internal Affairs, they should respond promptly and normally no later than (details).

Dear Ministry of Internal Affairs,
I would like to inquire why police do ask for money from 🚕 and bodaboda riders at road blocks,, yet even there's no traffic office,, specifically am pointing at police at rugendabara -sayuni weighing machine
What can we do to overcome that.
Thank you

Yours faithfully,
Nelson from kasese