The Road Transport and Safety Agency (RTSA ) has so far impounded three buses for long distance from the time the Statutory Instrument number 76 took effect on November 28, 2016.
Statutory Instrument number 76 prohibits long distance transport and bus operators from moving beyond 22:00 hours.
RTSA senior public relations manager Fred Mubanga said three buses had been impounded last week in Kitwe, Chipata and Mansa.
The move had been taken to avert the increased number of road accidents.
There was a wave of protest by transporters on grounds that the move could injure their business interests and congest the roads during the day.