(a) the Road Company shall be deemed to be in default if-
(i) it has failed or there is a substantial likelihood of its failing to complete the construction works within the period allowed by section 17;
(ii) there has been a substantial failure by it to discharge its obligations under the project agreement;
(iii) it has failed or there is a substantial likelihood of its failing to operate the road tunnel in accordance with this Ordinance; or
(iv) the guarantors, having been called upon under the guarantee agreement-
(A) fail to respond to such call within a reasonable period of time; or
(B) are in material breach of any of the provisions of the guarantee agreement;
(b) the Rail Company shall be deemed to be in default if-
(i) it fails to transfer to the Mass Transit Railway Corporation the rights granted to it under section 5(1)(b) and (c) in accordance with section 8; or
(ii) there has been a substantial failure by it to comply with its obligations under the operating agreement;
(c) the Road Company or the Rail Company, as the case may be, shall be deemed to be in default if-
(i) there has been a substantial failure by it to comply with any of the provisions of this Ordinance; or
(ii) (Repealed 76 of 1996 s. 80)
(iii) it fails to comply with a notice under section 68,
and the expression "default" (失責行為) shall be construed accordingly.