I think 302 and 307 cannot use 12m DDs but can use shorter DDs
(VO2X).
unless those 10.5m DDs comes back ...
but SMRT states a 12m DD or 18m bendies
800, 804, 806, 811, 812, 853/853C, 855, 856, 859, 860
900, 901, 902, 903, 911, 912, 913, 925,
961, 963/963e/963R
KJDEP buses (KJDEP itself can have DD, but Kranji Road is
narrow)