As to the interpretation of "actual knowledge" in s 45:
(1) The principle of restraint in departing from previous authority is such that Roman should remain binding. [38] (Basten JA); [62]-[65] (Macfarlan JA); [85] (Meagher JA).
North Sydney Council v Roman [2007] NSWCA 27; 69 NSWLR 240; Blacktown City Council v Hocking [2008] NSWCA 144; 144 Aust Torts Rep 81-956; Gett v Tabet [2009] NSWCA 76; 254 ALR 504
(2) The minority view in Roman has a number of difficulties, including a reliance on an unexplained presumption of a system of inspection and a reversal of the usual approach to statutory construction, and it would result in a criterion which would be uncertain and too broad having regard to the content of the knowledge to which s 45 refers. [25]-[29]; [47] (Basten JA).
North Sydney Council v Roman [2007] NSWCA 27; 69 NSWLR 240; Blacktown City Council v Hocking [2008] NSWCA 144
(3) The decision of the majority in Roman is plainly wrong such that it should not be followed. The omission of the legislature to specify, in s 45, those officers whose knowledge is to be taken to be that of the authority must be taken to be deliberate and there is no ground upon which such specification may be inserted into the statutory language. The question of "actual knowledge" must be addressed on a case by case basis. [101]-[116] (Simpson JA, dissenting).
Gett v Tabet [2009] NSWCA 76; 254 ALR 504; North Sydney Council v Roman [2007] NSWCA 27; 69 NSWLR 240; Wentworth Securities Ltd v Jones [1980] AC 74; Inco Europe Ltd v First Choice Distribution (a firm) [2000] 1 WLR 586; [2000] 2 All ER 109; Cooper Brookes (Wollongong) Pty Ltd v Federal Commissioner of Taxation [1981] HCA 26; 147 CLR 297; Tokyo Mart Pty Ltd v Campbell (1988) 15 NSWLR 275; Bermingham v Corrective Services Commission (NSW) (1988) 15 NSWLR 292; Taylor v The Owners - Strata Plan 11564 [2014] HCA 9; 253 CLR 531; Project Blue Sky Inc v Australian Broadcasting Authority [1998] HCA 28; 194 CLR 355
(4) The formulation of a category of persons who are the repository of the relevant knowledge for the purposes of s 45 should be avoided. The section requires, in any given case, a determination of whether a roads authority had actual knowledge of the particular risk the materialisation of which resulted in the harm suffered by the plaintiff. [3]-[4] (Beazley P, dissenting on this point).
North Sydney Council v Roman [2007] NSWCA 27; 69 NSWLR 240; Blacktown City Council v Hocking [2008] NSWCA 144