Although it seemed that the company had achieved its objective of making inroads into the city center and passengers' dissatisfaction was resolved thanks to the aforementioned agreement, the company's operations were still restricted by the so-called 'closed door system' under which 'passengers could get off but weren't allowed to get on' at the bus stops of newly extended routes while 'passengers going from the city center to the suburbs could get on but weren't allowed to get off ' at those bus stops.
これにより市中心部への進出は達成されて利用客にとっての不満も解消したかに見えたが、相互乗り入れは実現したものの、既存路線から乗り入れ可能となった路線の停留所での乗り降りについて、「降車はできるが乗車できない」、逆に都心部から郊外へ向けては「乗車は自由だが降車は禁止」という、いわゆる「クローズドドアシステム」の制約を受けていた。