Rubuta ci gaba don wannan sakin layi - A farkon shekarun 1970, kokarin da Jackie Stewart ya yi ya ga an soke wasannin Formula One da yawa saboda damuwar tsaro. Don taron 1969
, An sanya shingen Armco a takamaiman wurare a karon farko a tarihin kewayen. Kafin wannan, yanayin da'irar ya kasance (ban da cire motocin samar da mutane da aka ajiye a gefen hanya) kusan iri ɗaya ne da amfani da hanya ta yau da kullun. Idan direban ya tafi, yana da damar haɗuwa da duk abin da ke kusa da layin (gine-gine, bishiyoyi, hasken wuta, gilashin gilashi, har ma da tashar jirgin kasa), kuma a cikin shari'ar Alberto Ascari da Paul Hawkins, ruwan tashar jiragen ruwa, saboda hanyar da aka yi amfani da ita ba ta da Armco don kare direbobi daga fita daga layin zuwa cikin Bahar Rum. Gidan ya sami ƙarin Armco a cikin takamaiman maki don tsere biyu masu zuwa, kuma a shekara ta 1972, an yi layin kusan gaba ɗaya Armco. A karo na farko a cikin tarihinsa, an canza layin Monaco a 1972 yayin da aka motsa ramuka kusa da gabar ruwa kai tsaye tsakanin chicane da Tabac kuma an tura chicane gaba gaba kafin Tabac ya zama wurin haɗuwa tsakanin ramuka da hanya. An sake canza hanya don tseren 1973. An gina filin wasa na Rainier III Nautical inda madaidaiciyar da ke bayan ramuka take kuma da'irar ta gabatar da chicane biyu wanda ya zagaya sabon wurin iyo (wannan rukunin chicane an san shi a yau da "Swimming Pool"). Wannan ya haifar da sarari don sabon kayan aiki na rami kuma a cikin 1976 an sake canza hanya; an sanya kusurwar Sainte Devote a hankali kuma an sanya chicane daidai kafin rami madaidaiciya.