It is a matter of experience and trust.
In my past, providing traction some trailer operators are totally professional, others not so good.
Cargo Care back in the 90s trailers were obviously maintained including any scuffs and tilt damage, good tyres all lights work etc.
Norberts ex Le Havre not so good but generally legal. SeaRoute impeccable mechanicals and tyres.
Move on to 2016 SeaRoute gone ,replaced with De Rijke, zero maintenance, I have the GV9 to prove it. ( Yes I was aware of defects but took a chance )
Norberts all good modern kit, well maintained for a French company.
Present day , ND / EPO now looking shoddy with Bulgarian EPO units. Uk subbies unable to compete. LKW Walter impeccable and have local accounts to Poole ND Portsmouth to carry out repairs as required . But these trailers are homeless and not on any Operators License.
But LKW must retain subbies so hence the professional operation.
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