when should I use hyphens before nouns?

In the following text, I see two places that I think a hyphen should be used to join adjectives, in the first sentence between small and urban and in the last sentence between above and beyond. Is this correct? If not why?

"A number of ADA resources are available for larger operators, but few exist for small-urban, rural and frontier operators. This guide will outline how the ADA applies to demand-response operations. The ADA is a civil rights law. Knowing your agency’s responsibility under ADA regulations is the first step in providing comprehensive services that are accessible for everyone. Providing transportation, whether public or private, is about more than scheduling and maintaining vehicles; it is about helping people reach the places they need to go. The ADA provides the minimum requirements; many states and agencies go above-and-beyond these requirements to meet the needs of the people they serve."