The minimum front yard setback and landscape strip in the TC District shall be as follows: along any existing or proposed expressway and its appurtenant ramps, a front yard of 100 feet and a landscape strip of 30 feet; along any other street when parking is provided in the front yard, a front yard of 80 feet and a landscape strip of 15 feet; and along any other street when parking is excluded from the front yard, a front yard of 50 feet and no landscape strip required.