There is no denying that we have reached a point globally where maximising energy efficiency is an absolute necessity to ensure the future viability of our planet.
HAAL was conceived to not only help meet that requirement but to impart an additional level of intelligent functionality to what has, up to now, simply been a passive system to produce light after dark.
Street and wide area flood lighting infrastructure is ever-present and widespread in our modern world and, now that we are faced with environmentally driven wide scale global replacement, exploiting that network to enhance safety and save lives is unarguably a logical step forward.
HAAL’s reason for being, apart from the significant operational cost savings achieved by retrofitting existing outdated luminaires, is accident prevention through increased awareness delivered simply and cost effectively by designing additional perceivable attributes into what would typically be passive lighting infrastructure.
The acronym stands for ‘Hazard Approach Alert Lighting’, it is a method for conveying a potential change in environment via situational awareness. It does this by changing the level, colour and /or intensity of local light installation’s to provide early warning of an impending or approaching hazard. Examples of such applications include; Level Crossings, Open Station Train Platforms, and Emergency Services Vehicle (ESV) Transit Early Warning. HAAL is not intended to be the primary warning system, such as the boom gates on a level crossing, siren and lights on an ESV, or traffic lights at an intersection, its role is to serve in an additive or augmentative way providing an automatic, almost subliminal, early perception of approaching potential danger in the immediate vicinity.
Consider railway level crossings where, despite the existing installed control signal systems, accidents can and still do occur. A crossing additionally equipped with HAAL would consist of the appropriate installation of special HAAL enabled Street or Flood light fittings strategically located to illuminate the Road/Rail crossing zone. These pre-programmed luminaires possess the capability to double their lumen output and illuminate an appropriately coloured LED array upon the imminent arrival of a train at the crossing. Programmed to activate just prior to activation of the crossing signals, these highly visible luminaires convey early warning to vehicles in the vicinity of the impending transit dramatically improving driver situational awareness.
In the highway scenario HAAL has also been designed to improve driver awareness by utilising the normally passive street lighting infrastructure to convey early warning of an impending ESV approach. Typically HAAL enabled fixtures would be installed at road junctions and their associated approaches, roundabouts and their associated approaches, motorway/freeway slip roads and associated merge points, and along major trunk routes servicing emergency services installations such as hospitals, fire stations, and police stations. Consider a typical scenario where an ambulance has been called to an accident; HAAL enabled street lights up to 1.0 kilometre ahead of the vehicle will illuminate to full power and display an alternating blue/red strobe band around the body of the fixture that will not extinguish until passage of the ESV. This condition occurs only on the side of the carriageway used by the ESV indicating to vehicles ahead that an ESV approach is imminent. Road users are required by law to merge and give way to ESV’s as soon as they are aware of their immediate presence. Often this occurs quite suddenly affording little time for the average individual to react without panic. HAAL equipped highway luminaires are mounted at heights of up to 12 metres and provide an unrivalled line of sight visibility in excess of 2 kilometres, Motorists will see these lights activating, in turn, in the direction of the approaching vehicle and make the necessary adjustments to merge and clear the appropriate lane. As the ESV approaches an intersection HAAL equipped fittings surrounding the intersection will illuminate in a similar manner to those on the highway indicating to all vehicles, including those on the blind approaches, that arrival of an ESV at that intersection is imminent. Even if the ESV is fitted with Signal Pre-emptive Control it does not guarantee a clear transit as situationally unaware vehicles could still occupy both lanes blocking the transit until such time as they are aware of its presence and can take the appropriate action. HAAL enabled lighting ensures approaching vehicles are informed of the passage of the ESV and provide drivers with more lead time to react in a calm and decisive manner.
The above illustrates only a small cross section of the many potential applications of HAAL. As a system HAAL has the potential to contribute immense health and safety benefits to any transport network. Contact us to find out how saving lives can also be part of your saving energy initiatives.