237Every contract evidenced by a motor vehicle liability policy shall provide that, where a person insured by the contract is involved in an accident resulting from the ownership, use or operation of an automobile in respect of which insurance is provided under the contract and resulting in loss or damage to persons or property, the insurer shall,
(a)
upon receipt of notice of loss or damage caused to persons or property, make such investigations, conduct such negotiations with the claimant and effect such settlement of any resulting claims as are deemed expedient by the insurer;
(b)
defend in the name and on behalf of the insured and at the cost of the insurer any civil action that is at any time brought against the insured on account of loss or damage to persons or property;
(c)
pay all costs taxed against the insured in any civil action defended by the insurer and any interest accruing after entry of judgment upon that part of the judgment that is within the limits of the insurer’s liability; and
(d)
where the injury is to a person, reimburse the insured for outlay for such medical aid as is immediately necessary at the time.