(a) Except as provided in Subsection (c), if a claim arises from a premise defect, the governmental unit owes to the claimant only the duty that a private person owes to a licensee on private property, unless the claimant pays for the use of the premises.
(b) The limitation of duty in this section does not apply to the duty to warn of special defects such as excavations or obstructions on highways, roads, or streets or to the duty to warn of the absence, condition, or malfunction of traffic signs, signals, or warning devices as is required by Section 101.060.
(c) If a claim arises from a premise defect on a toll highway, road, or street, the governmental unit owes to the claimant only the duty that a private person owes to a licensee on private property.