Upon leaving the SVFR airspace, the pilot must comply with appropriate weather minimums, typically class E airspace in the continental USA. Thus, unless staying in class G airspace, the pilot must have better visibility upon leaving the lateral boundaries of the SVFR airport (typically class C or D). Controllers will never suggest special VFR
The basic VFR minimum visibility at night for class G, E, D, and C airspace below 10,000 ft MSL is 3sm. An exception to that minimum is when below 1,200ft above the surface and the visibility is at least 1 but less than 3sm
Question 1: In my opinion distance from clouds in class D airspace is clear in ยง 91.155 Basic VFR weather minimums. (a) Except as provided in paragraph (b) of this section and ยง 91.157 , no person may operate an aircraft under VFR when the flight visibility is less, or at a distance from clouds that is less, than that prescribed for the This appendix contains additional information to supplement the discussion of the National Airspace System, including aircraft separation, air traffic control facilities, and navigation, contained in Section 1.2.1. The airspace structure is a complex environment that requires the use of highly technical air traffic control (ATC) procedures.

The basic VFR weather minimums for operating an aircraft within Class D airspace are 1,000-foot ceiling and 3 miles visibility. During operations within controlled airspace at altitudes of more than 1,200 feet AGL, but less than 10,000 feet MSL, the minimum distance above clouds requirement for VFR flight is

Airspace Day Night, except as provided in ยง 91.155(b) More than 1,200 feet above the surface but less than 10,000 feet MSL Day Night More than 1,200 feet above the surface and at or above 10,000 feet MSL (b) Class G Airspace. Notwithstanding the provisions of paragraph (a) of this section, the
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class g airspace vfr minimums