Alley may be paved, or unpaved, and a blind alley is a cul-de-sac. Modern urban developments may also provide a service road to allow for waste collection, or rear access for fire engines and parking. Because of geography, steps (stairs) are the predominant form of alley in hilly cities and towns. This includes Quebec City in Canada and in the United States Pittsburgh (see Steps of Pittsburgh), Cincinnati (see Steps of Cincinnati), Minneapolis, Seattle, and San Francisco as well as Hong Kong, Genoa and Rome. Some alleys are roofed because they are within buildings, such as the traboules of Lyon, or
Determiner phrase phrase is a noun phrase (NP), not a determiner phrase. Beginning in the mid 1980s, an alternative analysis arose that posits the determiner as the head, which makes the phrase a DP instead of an NP. The DP-analysis of phrases such as "the car" is the majority view in generative grammar today (Government and Binding and Minimalist Program), but is a minority stance in the study of syntax and grammar in general. Most frameworks outside of generative grammar continue to assume the traditional NP analysis of noun phrases. For instance, representational phrase structure grammars assume NP, e.g. Head-Driven Phrase Structure