Separation Kerbing: Bike Lane & Parking Traffic Barrier

A painted line is often all that separates a person on a bike from moving traffic, and on a busy Australian road that line offers very little real protection. When a parked car door swings open or a vehicle drifts wide, the outcome for a rider can be serious.

Physical separation changes that. A well-placed traffic barrier gives cyclists a protected space and helps drivers park without straying into the riding line. Rubber separation kerbing delivers that protection without the cost and disruption of poured concrete.

This article is written for council engineers, traffic planners and contractors. It covers practical layout tips for bike lanes and parking areas, why reflectivity matters, and how modular kerbing works alongside bollards and Saferoads panels.

Why a Painted Line Is Not Enough

Painted bicycle lanes are inexpensive, but paint does not stop a vehicle. Where on-street parking sits beside a bike lane, riders can be caught between live traffic and the door zone, the strip where an opening car door can knock a cyclist sideways.

The Austroads Guide to Road Design Part 6A treats physical separation as a key measure for protecting people who cycle, particularly on higher-speed or higher-volume roads. Many councils still rely on line marking alone, largely because the usual alternative has been concrete.

Cast in-place concrete kerbing and islands work, but they carry real drawbacks. Installation is slow, needs formwork and curing time, and usually means lane closures and traffic control for days. Once poured, the layout is fixed, so adjusting a trial cycleway or parking arrangement means demolition and disposal.

Concrete is also unforgiving. A hard vertical edge can cause a rider to fall heavily, and a rigid kerb transfers the force of a vehicle strike rather than absorbing it. There is an environmental cost too, because concrete production is carbon intensive and removed material often becomes landfill.

For councils trialling new layouts on tight budgets, that mix of cost, downtime and permanence is a genuine obstacle to building safer streets.

Rubber Separation Kerbing: A Forgiving Traffic Barrier

Rubber separation kerbing gives you the physical protection of a kerb without the downsides of concrete. The redesigned separation kerb from Traffic Products Australia is moulded from 100% recycled rubber, then engineered to absorb repeated impacts and return to shape.

Each unit is supplied in 1000mm modular lengths and bolts to the pavement, so you can follow straight runs, tapers and curves without formwork. The current design weighs 21kg per unit, up from 15kg, which improves stability and resistance to displacement. Every product is backed by a 5-year guarantee.

Sustainable, Durable Materials

Because the kerbs are made from recycled rubber, they divert waste from landfill and avoid the carbon load of fresh concrete. They resist weathering, cracking and UV, and when struck they flex rather than shatter.

That resilience lowers maintenance and reduces whole-of-life cost compared with rigid alternatives. For a closer look at how rubber compares with traditional materials, see our guide to rubber kerbing, traffic islands, drainage and safety.

Reflectivity and Night-Time Visibility

Visibility is where many low-cost separators fall short. These kerbs carry a reflective coating so the line of separation stays clear to drivers and riders in low light and wet weather.

Delineation in Australia follows recognised standards. Retroreflective devices for traffic control sit under the AS/NZS 1906 series, while general pavement marking and delineation are covered by AS 1742.2. Specifying kerbing with built-in reflectivity helps a treatment perform at night, when the risk to vulnerable road users is highest. Yellow bodies suit parking control, while reflective faces lift conspicuity on the traffic side.

Saferoads Compatibility and Flexible Posts

Real sites rarely use a single product in isolation. This newer kerb design is built to work with common systems rather than against them. It accepts bollard-style posts for added height and presence, and it is compatible with Klemmfix, Versikerb and Saferoads panels.

That means you can run a continuous kerb at ground level and add intermittent bollards or panels where extra visual cues are needed, without re-tooling the layout. Place bollards with care, though, because poorly positioned posts can themselves become a hazard for riders.

Layout Tips for Bike Lanes and Parking Areas

Good separation starts with the set-out. A few practical pointers:

• Set the bike lane out from the adjacent traffic lane, not the existing kerb line, so the riding width stays consistent.
• Where parking runs alongside a separated lane, keep the parking on the traffic side so parked cars shield riders, and allow a buffer for opening doors. Queensland’s Cycling Infrastructure Program guidance sets minimum dimensions for this arrangement.
• Favour a forgiving, lower-angle edge over a sharp vertical face. Transport for NSW guidance prefers a slanted profile because it is more forgiving if a rider clips it.
• Leave gaps for drainage and maintenance access, and protect sight lines at driveways and intersections.

The diagram below shows a typical parking-protected layout.

How the options compare:

Installing Your Traffic Barrier With Minimal Disruption

The biggest practical advantage of a modular system is speed. Because the units bolt to the existing pavement, a crew can install long runs in hours rather than days, with no curing time and far less traffic control than concrete works demand. That keeps roads open and cuts the cost of closures.

A few design points to plan for:

• Confirm the pavement condition and fixings suit the surface.
• Lay out modules for curves, tapers and transitions before installation day.
• Coordinate kerb, line marking and signage so they work as one system.

Maintenance is straightforward. A damaged 1000mm unit can be swapped out individually rather than re-pouring a section, which keeps a trial or permanent treatment looking sharp. On cost, the initial outlay is competitive, but the real value is over the life of the asset through less downtime, lower repair costs and the option to relocate units if the layout changes.

Separation kerbing is one part of a wider set of traffic calming devices in Australia. Many councils pair it with kerbing and traffic islands, raised platforms and rubber roundabouts to manage speed and movement across a precinct.

Compliance matters for council sign-off. These separation kerbs are made to meet Australian safety standards and suit treatments designed under Austroads guidance. If you are documenting a scheme, our blog on traffic management plans that align with Australian standards is a useful starting point. Traffic Products Australia also provides in-house design support, with a principal design engineer who can tailor a layout to your site and manage the project end to end.

Best Practices for Specifying Separation Kerbing

Getting separation kerbing right is less about the product itself and more about how you specify and place it. The points below capture what works on real council and contractor projects, along with the missteps that are easiest to avoid.

• Separate from the traffic lane, not the kerb. Set a consistent bike lane width and keep a door-zone buffer where parking is adjacent.
• Specify reflectivity. Choose kerbing with a reflective coating and align it with AS/NZS 1906 and AS 1742.2 so the treatment performs at night.
• Use forgiving profiles. Prefer a lower-angle edge over a sharp vertical face to reduce fall risk for riders.
• Place bollards deliberately. Add posts for visibility, but space them so they do not become an obstacle.
• Think whole-of-life. Weigh quick installation, easy unit replacement and the ability to adjust trials, not only the upfront price.
• Check compatibility early. Confirm the kerb works with your chosen posts or panels, such as Saferoads, before you order.

Get these fundamentals right and your treatment will protect riders, keep parking orderly and hold its performance for years, with far less rework than a poured concrete equivalent would demand.

Build Safer Streets With Traffic Products Australia

Protecting cyclists and organising parking does not have to mean weeks of concrete works. Rubber separation kerbing gives you a sustainable, reflective and forgiving traffic barrier that installs quickly and adapts as your needs change.

With more than 20 years in the industry, in-house design expertise and a 5-year product guarantee, Traffic Products Australia helps councils and contractors across Australia build safer roads. To discuss a layout for your bike lane or parking area, or to request a free quote, call our team on 1800 211 212.