Seven vehicles exceeding the height restriction have become stuck in recent weeks.
October saw the highest monthly number of vessels returning to the canal since the Galaxy Leader hijacking.
Transporters say a lower diesel price eases pressure on operating costs, but there is room for further price cuts.
It will help ease congestion in Djibouti City and provide Ethiopia with an additional trade route.
Underreporting cargo crime makes supply chains more vulnerable.
The former public enterprises minister said he was not yet aware of the charges against him.
It appears from the most recent CMU that decisive intervention helped to resolve resource challenges.
