Front yard projections. No building and no part of a building, swimming pool, carport, or other structure shall be erected within or shall project into the front yard except steps, balconies, cornices, eaves, gutters or chimneys projecting not more than 36 inches, and one-story open porches projecting not more than 10 feet. In the R1, R2, R3 and R4 Districts, the required front yard setback area shall be lawn area or landscaped area with the exception of one driveway per street frontage, per each lot. Notwithstanding the foregoing, an awning or a canopy, as defined under Article XXIV, entitled "Signs," of this chapter, may be erected anywhere within the required front yard of any property within a commercial enhancement district as defined in the Cheltenham Township Commercial District Enhancement Plan, as approved and as amended, from time to time by the Cheltenham Township Board of Commissioners. The maximum width of a driveway shall not exceed the lesser of 18 feet or 50% of a property's street frontage.