Duty of insurers to satisfy judgments against per sons insured in respect of third party risks (1) If, after a certificate of insurance has been issued under sub section (4) of Section 95 in favour of the person by whom a policy has been effected, judgments in respect of any such liabili ty is required to be covered by a policy under clause (b) of sub section (1) of Section 95 (being, a liability covered by the terms of the policy) is obtained against any person insured by the policy, then, nothwithstanding that the insurer may be entitled to avoid or cancel or may have avoided or cancelled the policy, the insurer shall, subject to the provisions of this section, pay to the person enti tled to the benefit of the decree any sum not exceeding the sum assured payable thereunder, as if he were the judgment debtor in respect of the liability . . . 757 such a truck with its running engine in the control of the cleaner, this being the immedi ate cause of the accident, the owner of the car viz. the insured was held vicariously liable along with the driver and the cleaner.