Assessing Effectiveness of Road Markings during Heavy Rain and Considerations for Weather-resistant Markings

Ms Nadia Ahmad Samdin asked the Minister for Transport (a) how frequently does the Ministry conduct assessments on the effectiveness of current road markings during heavy rain; and (b) whether there are plans to implement more weather-resistant and visible reflective markings to improve visibility in adverse weather considering the increased frequency of adverse weather due to climate change.

The Land Transport Authority (LTA) regularly inspects road markings to ensure it is fit for use, including to ensure it is visible. The inspections are conducted once a week for expressways and once every two months for other roads. Since July 2023, LTA has adopted video analytics technologies to better detect poor road markings under various weather conditions.

LTA has been implementing more weather-resistant and visible reflective markings since adopting the Singapore Standard SS589 in 2017, which replaced the previous Singapore Standard SS498. The SS589 has more stringent requirements for better visibility in wet weather conditions and at night.