Public Health England issues LED street lighting warning

03/04/2018 |

Public Health England has warned that high levels of blue light in LED street lighting can be uncomfortable and are 'known to cause damage to the retina’.

The executive agency of the Department of Health also suggested that ‘daylight-running lights on cars’ can mean that older drivers ‘will be dazzled by oncoming vehicles with the risk that they may not see hazards until too late’ - a problem exacerbated by fog.

LED street lights have been used to replace older forms of street lighting across the UK as they are much cheaper to run, easier to control and can have less light dispersal.

However John O’Hagan of Public Health England warned that social and health factors should be considered, as well as financial.

‘Local authorities have been replacing mercury and sodium street lights with LEDs. If this is done purely on the basis of energy efficiency and cost, it is possible to end up with installations that may not be fit for purpose,’ he wrote in the chief medical officer’s annual report.

‘Some streetlight luminaires have LED sources that can be seen physically projecting below the luminaire, becoming a glare source or light pollution. The light spectrum may be enriched in the blue, which may be beneficial for keeping drivers alert, but many people will find the light uncomfortable. High levels of blue light are known to cause damage to the retina in the eye. This only tends to be a problem for blue LEDs and not for white-light LED sources containing a blue LED and a yellow phosphor.’

He pointed out that LEDs can be provided in a range of colour temperatures and that ‘warmer colours are likely to be more appropriate for populated areas’.

Mr O’Hagan said: ‘Some of the LED sources assessed by Public Health England and others vary in illuminance at a frequency of 100 hertz. At the extreme, the LEDs switch on and off 100 times per second. This is of concern for a number of reasons.’

In such circumstances ‘rotating machinery, which could include the blades on a food mixer, may appear to be stationary if the rotation rate matches the modulation rate or is a multiple of it’.

He added this frequency can also result in headaches, migraines and feelings of malaise in those sensitive to this light modulation.

Highways InProfile

latest magazine issue
Highways jobs

Electrical Design Engineer

Grade 9 £34,314 to £37,938 - Grade 10 £37,035 to £40,476 - Grade 11 £39,513 to £43,693 - Grade 12 £42,708 to £46,731 p.a.
The Construction Consultancy Services (CCS) team provide client-side construction consultancy services across a range of professional disciplines to d Durham
Recruiter: Durham County Council

Park Operations Assistant - Thorndon Country Park

Up to £12540.50 per annum
This is a permanent, part time position on an annualised hours contract. This means you will be contracted to work a minimum of 964.59 hours per yea England, Essex, Brentwood
Recruiter: Essex County Council

Principal Transport Planner (Strategy)

£46,731-£49,764
We are looking for an experienced professional to join North Northamptonshire Council as a Principal Transport Planner (Strategy). Sheerness House, 41 Meadow Road, Kettering moving to Haylock House, Kettering Parkway, Kettering NN15 6EY, United Kingdom
Recruiter: North Northamptonshire Council

Highways Capital Delivery Manager

£50,788 - £52,805
To be responsible for the implementation of Welsh Government’s Renewal and Upgrade programme. Baglan, Port Talbot
Recruiter: South Wales Trunk Road Agent

Senior Engineer x 2

£47,532 –£55,620 per annum
Our people are deeply committed to providing excellent services to our residents, doing all we can to make lives as good as they can be. Hounslow (City/Town), London (Greater)
Recruiter: Hounslow London Borough Council

Senior Highways Engineer

£50,754 – £53,607 per annum
Our people are deeply committed to providing excellent services to our residents, doing all we can to make lives as good as they can be. Hounslow (City/Town), London (Greater)
Recruiter: Hounslow London Borough Council

Highways Capital Lead

£47,754 - £50,788
To be responsible for management of the Regional Highway Capital Delivery Teams South Wales
Recruiter: South Wales Trunk Road Agent

Senior Development Management Engineer

£37,938 - £44,711
In line with our One Coventry Values, we want to ensure that our communities are represented across our workforce Coventry, West Midlands
Recruiter: Coventry City Council

Head of Highways

£66,366 - £85,284 pa
Highway Operations is a large division within the Planning, Growth & Infrastructure. Enfield (City/Town), London (Greater)
Recruiter: Enfield London Borough Council

Circular Economy Officer - FTC till the 31st March 26

£26526.00 - £31208.00 per annum + + 26 Days Leave & Local Gov Pension
... England, Essex, Chelmsford
Recruiter: Essex County Council

Director Highways, Transport & Waste Management

up to £120k
There for Nottinghamshire. There for each other. There for you. Nottinghamshire
Recruiter: Nottinghamshire County Council

Director of Highways and Transportation

£126,909
We’re seeking a dynamic and innovative leader to spearhead our Highways and Transportation services. Essex
Recruiter: Essex County Council

Senior Structures Technician

£32,654 - £36,124 plus circa £2000 - £4000 OT (variable
To lead on the planning, delivery and reporting of the highway structures General Inspection programme. Baglan, Port Talbot
Recruiter: South Wales Trunk Road Agent

Assistant Director of Place Operations

£85,962 to £93,267
Bury is a proud and prosperous borough Bury, Greater Manchester
Recruiter: Bury Council

Career Grade Transport Planner (Carer Grade 6-8)

Grade 06 (£29,093 - £32,654) TO Grade 08 (£37,938 - £41,511)
This is a fantastic opportunity to work for a forward thinking and dynamic transport authority located in the heart of the North West Warrington, Cheshire
Recruiter: Warrington Borough Council

Principal Performance and Assurance Manager

£Competitive
We have an exciting opportunity for a highly motivated Principal Performance and Assurance Manager to join our Senior Management Team SBIM Avonmouth, Bristol
Recruiter: Amey

Principal Construction Manager

£Competitive
We are excited to offer a fantastic opportunity for a Permanent Principal Construction Manager to join our dynamic Area 12 West Yorkshire
Recruiter: Amey

Electrician

£Competitive
We are excited to offer a fantastic opportunity for two Permanent Electricians Tingley, Wakefield
Recruiter: Amey

Principal Engineer – Structures Capital Delivery

£43,693 - £47,754
To act as one of the Agent's technical experts for highway structures schemes and related issues South Wales
Recruiter: South Wales Trunk Road Agent

Senior Engineer Programme Management

£36,124 - £39,513
To support the Principal Engineer ensuring effective co-ordination, programming and contract administration. South Wales
Recruiter: South Wales Trunk Road Agent
SUBSCRIBE NOW

Latest Video

Subscribe to Highways today to ensure you keep your finger on the pulse of everything happening in the UK road network throughout the year.

SUBSCRIBE NOW