(a) Increase of allowance.--Upon the recommendation of the persons having custody and management of the police pension fund, a city may, at its discretion, increase the allowance of individuals receiving an allowance from the police pension fund by reason of and after the termination of the services of a member of the fund.
(b) Limitation.--An increase made under this section must be in conformity with a uniform scale that may be based on the cost of living, but the total of the allowance may not exceed one-half of the current salary being paid patrol persons of the highest pay grade.