The Minister of Transport NO v D Du Toit

On 27 September 1995, the first respondent (plaintiff) was seriously injured when the motor vehicle in which she was a passenger left the road and went over an embankment near the Grasmere toll gate on the N1 south of Johannesburg. Her husband was driving. The couple was unfamiliar with the route. They mistakenly entered the toll booth on the extreme left, believing it was for through-traffic on the N1, but it was actually for traffic exiting the freeway onto the R557 (De Deur-Ennerdale road). After paying the toll at approximately 11 pm, they proceeded along the off-ramp, still believing they were on the N1. The husband picked up speed and continued driving. As they emerged from the illuminated area near the toll gate into darkness, they "ran out of road" - the driver drove straight through a 'T' intersection and down an embankment on the southern side of the R557. The plaintiff sued the South African Roads Board (later the Minister of Transport) alleging negligent failure to erect and maintain adequate road signs. The Minister joined Toll Road Concessionaries (Pty) Ltd (Tolcon) and the plaintiff's husband as third parties.

• Whether the Minister of Transport (or his predecessor, the Roads Board) owed a legal duty to road users to erect and maintain adequate road signs and facilities
• Whether the road signage at the Grasmere toll gate and off-ramp was adequate to warn motorists of the exit and the 'T' intersection
• Whether the inadequate signage constituted negligence on the part of the Minister's servants
• Whether there was a causal link between the inadequate signage and the accident
• Whether there was contributory negligence on the part of the plaintiff's husband and the degree thereof
• The standard of care expected from authorities responsible for road signage in relation to the conduct of road users

The appeal was dismissed. The appellants (Minister of Transport and Toll Road Concessionaries (Pty) Ltd) were ordered jointly and severally to pay the first respondent's costs. The finding of the court a quo was upheld: the Minister was liable for 20% of the plaintiff's damages due to negligent road signage, while the plaintiff's husband was 80% responsible due to his contributory negligence.

A road authority owes a legal duty to road users to erect and maintain road signs and facilities with reasonable care. The standard to be applied is not whether a perfectly cautious driver would have noticed the signs, but whether the signage was adequate for an ordinarily attentive driver in the circumstances. Road signs, particularly warning signs for potential hazards, must be clear, unambiguous and appropriately positioned so that they can be read and comprehended at a glance, especially at night and in areas of transition from lit to unlit road sections. Where inadequate signage contributes to an accident, the road authority will be liable in negligence even if the driver was also negligent, and liability will be apportioned according to relative degrees of fault. Causation can be established on the balance of probabilities where it is shown that proper signage would likely have alerted the driver to the danger.

The Court observed that the fact that changes were made to signage after an accident does not necessarily give rise to an inference that the pre-existing signage was inadequate, as the nature and extent of warning signs may be influenced by the number of accidents occurring at a particular location (citing S v Bochris Investments (Pty) Ltd and another 1988 (1) SA 861 (A)). The Court also noted that while regard may be had to expert evidence about the adequacy of road signs, it is ultimately for the court, not the witness, to decide the issue, and the court will only accept expert opinions to the extent they are founded on logical reasoning or are otherwise valid (citing Michael and another v Linksfield Park Clinic (Pty) Ltd and another 2001 (3) SA 1188 (SCA)).

This case is significant in South African delict law as it establishes important principles regarding the liability of road authorities for inadequate signage and the standard of care owed to road users. It clarifies that road authorities cannot simply assume that all drivers will notice and comprehend every sign, but must ensure that warning signs are positioned, designed and maintained to be readily comprehensible to ordinarily attentive drivers, particularly in potentially dangerous situations. The judgment recognizes the practical limitations faced by drivers, especially at night, in reading and comprehending road signs while maintaining attention to the road. It also demonstrates the application of contributory negligence principles in road accident cases involving both driver error and deficient road infrastructure. The case shows that even where a driver is highly negligent, a road authority may still bear partial liability if its signage deficiencies contributed to the accident.