Malaysia's Glowing Road Markings: Why a Future Project Failed

Without street lamps, only glowing road markings: in Malaysia, a forward-looking project was meant to make dark rural roads safer – until an awkward bill arrived.

In a suburb of Kuala Lumpur, Malaysia turned an unremarkable stretch of road into a small testbed for future transport. Road lines that charge in daylight and glow by themselves after dark were intended to demonstrate how safety could be improved on unlit routes without conventional street lighting. The idea attracted worldwide attention, but ultimately foundered on cost, durability and expert assessments.

How a rural road suddenly looked like science fiction

The trial took place in Hulu Langat, Selangor, at the junction of Jalan Sungai Lalang and Jalan Sungai Tekali near Semenyih. Conventional street lamps are still absent there, and visibility along the route is considered poor.

At the end of October 2023, standard road markings on a section measuring around 245 metres were replaced with photoluminescent lines. This specialist paint stores daylight before gradually releasing it once night falls. The road appears almost ordinary in daylight, but the markings become clearly visible in the darkness at night.

From the outset, the authorities presented the scheme as a safety measure for dark roads – not as a lighting gimmick for social media.

The responsible Public Works Department publicly described the initiative as an attempt to bring “innovation into road construction”. Works Minister Alexander Nanta Linggi said that the markings remained visible for up to ten hours and could still be seen in rain.

Why the idea quickly became a source of hope

The pilot addressed a weak point shared by many countries: remote or rural roads where there are no lamps, budgets are limited and accident numbers rise after dark. In these locations, road markings that are difficult to make out can become hazardous.

On paper, the benefits were obvious:

• no electricity costs, as the markings recharge using daylight
• improved visibility of traffic lanes at night
• no extra poles or maintenance required for street lamps
• support for modern mobility and climate objectives through energy-saving solutions

In Malaysia, the glowing markings were also positioned as an alternative to so-called road studs, commonly known as “cat’s eyes” – reflective units set into the asphalt that return headlamp light but do not emit light themselves.

The concept was not entirely new. The Netherlands had already made headlines with its “Smart Highway” project: glowing lines developed by Studio Roosegaarde and construction firm Heijmans kept a trial stretch visible for several months. There, the markings glowed for up to eight hours. The underlying principle was the same – the road itself became the light source.

Expansion plans: from 245 metres to 15 kilometres

Initial feedback from Malaysian motorists was positive. Social-media users praised both the better guidance and the futuristic appearance, especially on rural roads that would otherwise be completely dark.

Politicians and authorities responded swiftly. As early as February 2024, Selangor announced plans to expand the system: 15 new sites across all nine districts were to receive glowing markings, covering approximately 15 kilometres of road in total. Areas in Sepang, Kuala Langat and Petaling were among those named.

Other states also joined in. Johor identified 31 roads for trial projects, including a roughly 300-metre section of Jalan Paloh J16 in Batu Pahat. The technology appeared to be moving beyond the Semenyih pilot towards a potential new standard – or at least becoming a serious element of transport policy.

The cost explosion in detail

Behind the scenes, ministries and specialist departments were already doing the sums. This was precisely where the project began to unravel, because photoluminescent paint is expensive – extremely expensive.

The glowing material therefore costs almost twenty times as much as ordinary paint – even before durability, repairs and cleaning requirements are considered. Every downpour, roadworks project and lorry tyre abrasion shortens the coating's service life and eventually makes remedial work necessary.

The parliamentary statement that changed everything

In November 2024, the scheme came to an abrupt halt. Deputy Works Minister Ahmad Maslan told Parliament that the glowing markings would probably not be pursued further. His reason was the excessive cost.

“The costs are too high, so we will probably not continue with the glowing lines,” Maslan said, adding that the tests had not convinced the ministry's specialists.

That second statement carried almost more weight than the budgetary argument. It suggested that the system was not merely costly, but also technically unsatisfactory in some respects. Possible issues include:

• the glow fading too quickly
• difficulties during heavy rain or when the road surface is dirty
• complications with maintenance and touch-up work
• failure to meet standards for visibility distance and contrast strength

No detailed official reports have been made public, but the message is clear: visibility was sufficient to impress motorists, but not enough to satisfy strict engineering and safety standards – particularly for widespread use funded by limited public money.

What the failed Malaysian road reveals about modern road safety

Malaysia's decision to stop does not mean the underlying problem has been solved. Transport experts around the world face the same question: how can road markings remain reliably visible at night, in rain and under heavy wear?

Japan, for example, has for years been systematically examining how road markings can be measured, maintained and renewed at the right time. The country's National Institute for Land and Infrastructure Management is developing indicators to establish when lines are regarded as “no longer safely recognisable” and must be replaced. Markings are not treated as a minor detail, but as a central part of the safety system, as important as crash barriers or speed limits.

The Semenyih trial offers several lessons that extend far beyond Malaysia:

• Innovation alone is not enough: A project may look exciting and deliver short-term benefits, yet fail if its economics and standards are unsuitable.
• Operating costs outweigh the showpiece effect: Photoluminescent paint looks spectacular, but in day-to-day use it consumes funds needed for resurfacing, bridge maintenance or conventional lighting.
• Acceptance is only one factor: Positive responses from motorists are useful, but cannot replace long-term laboratory and on-road testing.

What technology lies behind glowing road markings?

The paint used contains pigments that store light energy and release it slowly. The principle is familiar from “glow-in-the-dark” toys and emergency exit signs. On public roads, however, the requirements are significantly greater.

They include:

• high resistance to abrasion from tyres and tracked vehicles
• resilience against UV radiation, rain and heat
• stable luminosity over several years
• clear visibility even with oncoming traffic and wet conditions

The pigments and binding agents capable of meeting these requirements are complex and costly. At the same time, every additional layer on the asphalt affects grip, noise levels and the ability to paint over or remove markings later.

Where glowing roads could still make sense

Malaysia putting the brakes on its large-scale project does not mean the technology is generally finished. It could be useful for:

• short hazard locations, such as sharp bends, bridge approaches or construction-site entrances
• cycle routes, where street lighting is absent but traffic volumes are lower
• tourist routes, where the effect also has marketing value
• airport aprons or industrial sites, where good nighttime visibility is essential and budgets are larger

In such niches, the additional expense is easier to justify because individual sections can be upgraded selectively instead of converting entire road networks.

What the Malaysia case means for Germany and Europe

Local authorities in Germany and elsewhere in Europe also complain about rising energy costs, deteriorating roads and tight budgets. Concepts involving “smart asphalt”, integrated LEDs or glowing paints regularly appear in innovation papers. Malaysia's experience serves as a reality check.

Three points stand out:

• Straightforward solutions are preferred: Properly applied standard markings, renewed regularly, can deliver major safety benefits without overwhelming public budgets.
• A holistic view matters: A road needs more than glowing lines – drainage, surfacing, signs, speed limits and enforcement all play a part.
• Testbeds remain important: Pilot projects such as the one in Semenyih produce valuable data even when they are eventually halted. They show where the limits lie and where further research is worthwhile.

For engineers, urban planners and politicians, this means innovative material systems such as photoluminescent paints remain interesting, but they must prove themselves in a hard comparison with standard solutions – in terms of safety, cost and practicality.

Ultimately, the sober conclusion is this: the most spectacular road is not automatically the safest. Sometimes the plain, clearly visible white line made with “boring” paint beats even the brightest vision of the future.