The biggest problem is in my opinion not the frequency of using this service, it is the exit with the sharp turn.
Is it possible to extend the "No Collision Area" to the street? This should solve the problem with the trafficjam, or defuse it a little bit.
And a other reason for this heavy trafic there are the cars at the Duisburg-Calais road. The most cars i have seen on this road are lunatic drivers. Overtakeing on both sides, overtakeing into the oncoming traffic, speeding like hell and so on what causes many crashes.