The traffic rule book only states (§4-01): Crosswalk. (i) Marked crosswalk. That part of a roadway defined by two parallel lines or highlighted by a pattern of

The traffic rule book only states (§4-01): Crosswalk. (i) Marked crosswalk. That part of a roadway defined by two parallel lines or highlighted by a pattern of lines (perpendicular, parallel or diagonal used either separately or in combination) that is intended to guide pedestrians into proper crossing paths. (ii) Unmarked crosswalk. That part of a roadway, other than a marked crosswalk, which is included within the extensions of the sidewalk lines between opposite sides of the roadway at an intersection, provided that (A) the roadway crosses through the intersection rather than ending at the intersection, and/or (B) all traffic on the opposing roadway is controlled by a traffic control device.* Basically it is approved if there are two parallel lines (marked crosswalk) or no parallel lines (unmarked crosswalk) and is NOT a T-intersection or if there is a traffic control device.