Latest ADRs Focus on Lane Departure Warning

The latest push by the government to enhance safety on our roads is the introduction of the Australian Design Rules 99/01: lane departure warning systems (LDWS). This amendment establishes a uniform stipulation for LDWS fitted to specific motor vehicle categories.

The update was published to the Federal Register of Legislation on Friday 9th February. The technology will be required for most heavy vehicles under the UN category code M2 to N3. For new model vehicles this will be enforced from 1st September 2026. For all new vehicles by 1st September 2028. The regulation is part of the Government’s 9 year National Road Safety Strategy, striving towards zero deaths and serious injuries on all roads by 2050. 

So how does lane departure warning systems work and why does the technology improve road safety? 


Lane Departure Warning vs Lane Keeping Assist:

Firstly, let’s distinguish the two similar technologies. According to the NHVR, lane departure warning systems passively alert the driver when the vehicle is about to or has already veered from the current lane. On the other hand, lane keeping assist systems (LKA) are triggered when a vehicle has left the current lane, gently redirecting the vehicle back. LKAs are less common for heavy vehicles. A key reason being is that the systems can actually hinder safe driving. Often in urban environments, trucks or buses will need to occasionally deviate from their lane such as turning into sharp corners. 


Why are Lane Departure Warning Systems Needed?

According to the NHVR, these safety systems prevent up to 15% of fatal incidents on roads. Unintentionally deviating from a lane can usually be linked to in-cabin distractions or drowsy driving. Immediate, audio, visual and haptic alerts instantly warn a driver, reducing the chance of a collision or running off the road. Safety tech such as LDWS can also have positive impacts on fleets’ operational costs. These include, reduction in repairs, truck down time, loss of cargo and lower insurance premiums.


Enhancing Lane Departure Warning Systems:

Lane departure is only one element that impacts incidents on the road. Forward collisions are a significant contributor to crashes and fatalities. Speeding, wild weather and sudden mergers from other vehicles on the road reduce the time it takes for heavy vehicles to safely slow down. A rear-end collision by a truck or bus can have a far greater impact on smaller, passenger vehicles. An advanced driver assistance system (ADAS) such as Mobileye uses artificial intelligence to scan the road ahead and warn drivers in real-time of potential collisions. Specifically designed for large vehicles, the computer vision technology also combines lane departure and headway monitoring warnings to mitigate collisions of any kind.  


Consider Other Safety Tech For Your Fleet:

When evaluating LDWS, it may also be a good time to consider other technology that reduces the risk of collisions. Trucks need to contend with large blind spots.This is especially relevant when sharing the roads or highways with vulnerable road users such as pedestrians, cyclists and motorcyclists. A blind spot monitoring system such as Spotto uses cutting edge microwave radar to continuously monitor blind areas alongside, and in front of a truck. Inside the cabin, a blind spot indicator is fitted to the A-pillar. This illuminates when the radar senses an object in the detection zone. If the truck’s turn signal indicator has been activated, Spotto’s Blind Spot Indicator will flash and produce an audible alert to warn the driver, mitigating a collision.  

The intelligent system uses a speed-adaptive algorithm to ensure the right objects are always detected. At Speeds above 30km/h the detection zone extends 3m into the adjacent lane and up to 12m alongside the truck and forward of the bonnet. Stationary objects such as parked vehicles, barriers and guardrails are ignored, limiting false alerts. At speeds below 30km/h Spotto’s Turn-Assist reduces the detection zone to 1.5m x 3m, ensuring the driver is alerted to all objects, both moving and stationary, including pedestrians and cyclists.


The implementation of Australian Design Rules 99/01 mandates lane departure warning systems (LDWS) for most heavy vehicles, aiming to enhance road safety and reduce fatalities. LDWS can prevent up to 15% of fatal incidents by alerting drivers of unintentional lane deviations, reducing the risk of collisions. Additionally, considering complementary safety technologies like blind spot monitoring systems can further mitigate collision risks, especially in urban environments with vulnerable road users.