Reports say that this road is not suited for cars and many tourists get stucked here. I guess that these roads neither are highway=unclassified nor grade2 (macademia!), but grade3 and smoothness=very_bad or less. But unfortunately I do not know this area myself. (https://www.facebook.com/groups/kretaforum/permalink/3518787878187063/?__cft__[0]=AZXLftx_8uvpSZ91FCb03JKUCl1nurz5XprpcjiI9Xq92wYkkyXFnHFSDfqg_wlesuTTcUigtZE5xsA-e-0GaW8qpw2wR97u-JEDcATeHd1dNRywquYQ0ujuBK6br0vWOugxKrDd7njuiHbztYSvDQ1LB_HsTEUmoO3xp2tnrVy80CiicZ_hTXYTo9OMjDM9_B8&__tn__=%2CO%2CP-R)