6. Check the riding quality index (IRI) of the road surface after repairs/reinstatement using a portable equipment or a vehicle mounted device.


UPDATE: Tech briefing pdf is now available for download in ATTACHMENT

UPDATE 2: Refer to Additional Info below for the Proposal Submission Instructions

Currently after localised road repair/reinstatement works, there are no quality checks done on the finished work such as riding quality of the road pavement by the contractors. Riding quality is measured in terms of International Roughness Index (IRI).

With the proposed solution, road works contractors could then able to carry out riding quality checks once they complete the road repair works, which could allow them to see to any necessary remediation works immediately before opening to traffic. This would also allow the road maintenance team to monitor the quality of road repair works done by the contractors, which could indirectly save future maintenance cost and avoid further traffic disruptions.

The equipment available in the market today for measurement of IRI costs approximately SGD 500,000 due to the use of laser sensors which could produce high accuracy results, complying to Class 1 requirements of the latest ASTM E950/E950M.

Due to the high cost of this equipment, it is not practical to stipulate the requirement for contractors to check the riding quality of the repaired road pavement on a project level basis (i.e. IRI measurement after every road repair works).


The proposed equipment should be lightweight and portable such that it can be deployed as a hand push or vehicle mounted device. It could measure the road profile, compute and show the riding quality of the road pavement. The accuracy of the results shall be comparable to at least class 3 requirements of the latest ASTM E950/E950M. Some of the benefits include better and safer road experience for vehicle users, convenient and cheaper method of checking the riding quality of the roads frequently. There could also be potential cost savings in terms of future maintenance costs.

Desired Outcome

Q2 2020 – Prototype:

The prototype must be able to prove that the parameter/s measured from the vehicle mounted device or equipment can be correlated successfully to obtain the riding quality of the road pavement in terms of IRI.

Q4 2020 – Pilot Deployment

During the Pilot Deployment with actual road works contractors, it should be shown that the product is easy to operate and maintain, and must be able to measure IRI with the accuracy comparable to at least class 3 requirements of the latest ASTM E950/E950M.

Development Timeframe

Q2 2020 – Prototype

Q4 2020 – Pilot Deployment

Q3 2021 – Implementation

Additional Info

Market Potential for proposed solution/product

Ultimately, the aim is to search for a relatively affordable equipment for contractors to purchase and use to check for riding quality of the road pavement immediately after road repair/reinstatement works. If the prototype is able to derive IRI results from successful correlation with measured parameter/s, it would potentially be included in the road maintenance contracts where it would be a requirement for every contractor to conduct IRI checks after every repair/reinstatement works so as to be compliant to LTA standards/requirements.

The coverage for the road repair/reinstatement works encompasses all the roads in Singapore which spans for about 3500 km. These solutions may be extended to other regulatory bodies such as utility agencies to check for IRI on road pavements after utility laying, maintenance etc. It also has a potential for overseas market, since there are no such products available overseas.

Proposal Submission Instructions

  1. Please download Application Form_0.docx found in the ATTACHMENT and fill it as detailed as possible.
  2. Click on “APPLY” button in this challenge page and fill in the required fields. Do upload your completed application form and any supporting documents prior to submission.
  3. If you are ready to submit your application, select “Submit for Review” in Change Proposal Workflow state field and click the Publish button.
  4. If you wish to save your application and return later to work on your application, select “Draft” in Change Proposal Workflow state and click the Publish button.  Subsequently, when you return to your application and ready to submit, select “Submit for Review” in Change Proposal Workflow state field and click the Save button.
  5. You will receive a confirmation email once you have successfully submitted your application.
  6. Do contact [email protected] if you have issues with the application.


Proposal submissions are open from 30 Jul 2019 10:00AM to 31 Oct 2019 12:00AM