In an action arising from a collision involving a taxi driver with liability coverage of $500,000 for a single occurrence and uninsured and underinsured motorist coverage of $20,000 per person/$40,000 per occurrence, the minimum allowed by law, and the other driver had policy limits of $50,000, the claim for underinsured motorist coverage made by the taxi driver with his insurer was properly rejected where the limits of the other driver’s liability insurance policy were greater than the limits of the taxi driver’s underinsured motorist coverage, the underinsured motorist coverage was not triggered, and the election form used by the taxi driver’s insurer in establishing the uninsured and underinsured coverage limits was not ambiguous and the minimum limits were knowingly selected when the policy was issued.