Why Glow in the dark roads not glowing

The 2014 BBC News reported that the glow in the dark road disappeared because of the glow in the dark pigment is not waterproof grade.

The glow in the dark road unveiled in 2014 April on the N329 in Oss, approximately 100km south-east of Amsterdam. The project aims to develop an alternative to street lights in areas where they are not present.

Since the glow in the dark road markings was put in place two weeks ago it has been reported that some drivers were driving along the road in the dark with their headlights switched off so that they could experience the glow in the dark effect.

Civil engineering firm Heijmans, which is running the pilot project with interactive artist Daan Roosegaarde, confirmed to the BBC that the glow in the dark road markings were sensitive to large amounts of moisture due to rainfall.

This meant the road markings were not giving out a consistent level of light.

In a statement, Heijmans said: “As expected the ‘real life’ trial enables us to learn from the environment and users.

“We will use these insights to introduce an update to the Glowing Lines 2.0 version. In the meantime, we have temporarily faded out the lining to prevent any confusing situations for road users.

“As planned we are working on developing Glowing Lines version 2.0, which will be ready for this summer. It will then be introduced on a larger scale in the Netherlands and abroad.”

When the glow in the dark markings were initially unveiled the UK Highways Agency said it would watch the trial with interest but said that previous studies had shown that “luminescent road paint would be unsuitable for use in this country”.

It said it would take several things in to account when deciding whether to include luminescent road markings in its design standards. These would include how far in advance road markings could be seen, how skid resistant they were, how visible they were during the day and how they would perform in winter when there are fewer hours of daylight.

We have developed a high-performance waterproof glow in the dark coating, in which the important raw material glow in the dark powder has been patented by Japan’s waterproof after we tested our luminous powder can be soaked in water for more than 100 days, and this experiment is continuing