HA Road Lighting Control System (HARLiCS)

Publication type:Report
Authors: MottMacDonald
Document Reference: Garda S (2011)
Publication Date: 07 August 2012 14:01
Assessment Level: Addition to the evidence pool
Peer Review Information: No
Topics: No related topics

Executive Summary

The HARLiCS Phase 1 project was commissioned by the Highways Agency’s Network Services Directorate in Dec 2010. Mott MacDonald as the consultant has developed and trialled the HARLiCS system and undertaken the necessary evaluation activities. This has led to the development of an Outline Business Case to inform the Highways Agency in its decision making for a future roll-out.

The HARLiCS system has achieved its technical objective of providing an open interface to the Central Management System (CMS) and having the ability to submit dynamic lighting level commands to control the lighting. In terms of reliability and availability the system has worked well with no major issues arising in performance.

The trial and evaluation of the system has provided opportunities for the system to be enhanced in the future so that it operates more efficiently and is more feature rich. These include software enhancements, integrating the system with wider traffic sources and introducing the flexibility of various dimming profiles.

The trial operated for 6 weeks. It can be stated at this stage that there was no degradation in safety during the period that the system was trialled. A robust safety case was developed that ensured that any lighting levels set were not compromising existing lighting standards and policy

Analysis of the system from an operational and business perspective has yielded results showing benefits for energy and money savings.

Headline figures achieved are:

Headline benefits – implementation of a national HARLICS dimming system:
Scheme lit to ME2: 15.6%
Scheme lit to ME1: 26.4%
Headline benefits – implementation of a national HARLICS system incorporating MNSO:
Scheme lit to ME2: 54.1%
Scheme lit to ME1: 59.6%

Therefore, the system has demonstrated that it is a tool that takes another positive step towards intelligent lighting, building on the Midnight Switch-Off (MNSO) solution, and has the potential to contribute to the Highways Agency’s future energy savings plan lending itself to be considered as an important intervention to deploy.

Following the appraisal process it is recommended that for Phase 2, Option 3 is adopted – HARLICS and MNSO National Roll-Out, as part of Area Energy Savings Plans. This is because this option offers the potential to save more money and achieve better returns on the overall investment. Option 3 also fits in with the Highways Agency’s strategic needs related to economic and environmental factors. Key figures projected for Option 3 include:

  • 2.6 % annual energy saving (5.66M kwh) for schemes lit to ME1; this will be reduced
    to a 2.3% annual saving (5.12M kwh) based on ME2;
  • £480k annual cost saving for schemes lit to ME1 with an associated CO2 saving of
    2.997k tonnes and a return on investment in 7 years; this will be reduced to a £434k
    annual cost saving for schemes lit to ME2, with an associated CO2 saving of 2.71k
    tonnes and a return on investment in 7.8 years.

If option 3 were to be implemented as part of a programme of renewals lamp and ballast costs could then be excluded and the return on investment would reduce to 4.2 and 4.8 years for respective ME1 and ME2 schemes.

In summary the HARLiCS system provides another significant step in improving the use of Highways Agency’s assets in the most efficient and cost effective way and the recommendation is that commissioning of Phase 2 should be considered.