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Home My WebLink AboutCOM 0223.001 2012-2014 1 108 Railroad Ave Ronald L.Thiel, P.E. ; ; �_'� Hilo H196720 Traffic Division Chief r_s•s PH: 961-8342 •�-- AY• Q1_RC01 County of Hawaii DEPARTMENT OF PUBLIC WORKS —TRAFFIC DIVISION March 27, 2013 HONORABLE CHAIRMAN J. YOSHIMOTO AND MEMBERS OF THE HAWAII COUNTY COUNCIL HAWAII COUNTY COUNCIL HILO, HI 96720 SUBJECT: TRAFFIC CODE AMENDMENT: SECTION 14-55—REVISION OF TABLES We are submitting an additional power point to be used as back ground information for this proposed amendment Ronald L.Thiel, P.E. Chief of Traffic Division Comm. No. Z 3' Ref.To: l 1 W Ref. Date + `A 1 6 2013 3/27/2013 L.)041 { OF HAvviAi TRATF( Y FOR TE LIGHTING ORDINANCE STRATEGY FOR. THE NEIL' LIGHTING ORDINANCE I. ENERGY EFFICIENCY II. ENVIRONMENT CONSIDERATIONS It is the goal of the County of Outdoor lighting practices for the Hawaii to improve energy County of Hawaii are to be efficiencies for lighting systems designed to conform to special used on public roadways and all standards friendly to Astronomy County facilities where outdoor and nature. Shielding against lighting is present. light pollution and controls of As the author of the lighting blue light production producing ordinance,it is the County's night-sky friendly and intent to set standards and environment friendly conditions encourage the best efficiencies are essential to the new lighting for all public and private outdoor ordinance. lighting applications 1 3/27/2013 HISTORY Since the introduction of the current ordinance published and enacted in 1988,Low Pressure Sodium(LPS)lamps have been the predominant source of outdoor lighting on the Big Island of Hawaii. die the P5 I f, a LPS LAMP DRAWBACKS: I. The LPS lamp is very long similar to linear fluorescent. The large size of the lamp makes it difficult to distribute the light produced by the lamp effectively.Poor control of light distribution, when the lamp is placed in a fixture,significantly retards the otherwise high efficiencies of the lamp. 2. Because LPS fixtures efficacies*are poor,shielding has not been mandated,creating unnecessary light pollution on the island. 3. The exceptionally large size of LPS fixtures is also troublesome in Hawaii's typical windy conditions. 4. Lamp disposal needs special handling—sodium and water are combustible. 5. The color production of Low Pressure Sodium,although good for astronomy,is poor at best for all other purposes. The light production from LPS is basically monochromatic producing a black and white(orange and white)condition.EMT responders cannot tell the difference between blood and oil and the color is also too close to amber—caution traffic lights. MEM *(efficacy-the ability of the fixture to deliver the light produced by the lamp to where it is intended) 2 3/27/2013 Low Pressure Sodium Lamp Color MEM Intersection Traffic Control Lights Problem One - Traffic Hazard • in you tee watch*ant is 10 regulate liatt:c and which is • ,„ :•1 • to nght the street? • • COUNTY INITIATIVE • Approximately five years ago the County began a research and testing program involving physicists,electrical engineers,lighting specialists,astronomers and traffic professionals to evaluate the validity of new lighting technologies. • Lensing experts combined with one of the leading manufacturers of LED light engines produced a product tailored for County roadway needs. 3 3/27/2013 The Difference in Color Rendition between and the New Filtered LI `' is dramatic. Problem Two - Color Rendering Colors must be seen by Emergency Responders. All colors appear Amber/Yellow with LPS. This can result rn mistakes by EMTs. Solution - Install a broader spectrum street light that allows the Emergency Responder to distinguish colors IMMO LDS Source Yellow LED Source TAP' 11741■41 A Roadway Lighting F xtur was then designed and manufactured for County use and prototypes were installed for testing. t 1. ,, 4 3/27/2013 • The County with astronomy leaders then examined the physical application and operation of the new LED light fixtures for the following two years. ss • In application the County selected a color temperature of 3550 Kelvin with a Color Rendering Index(CRI)of over 40. This was a significant improvement over LPS which has a CRI of approximately 2. 1 ,'1. 1 Notice the improved difference in color temperature between th LED Street Lights i om the first slide m co " Amber Caution Traffic Light. Hilo Intersection • ilr 5 3/27/2013 Blue light — Rayleigh Scattering from Honolulu as seen on Mauna Kea Astronomy wanted a light source with blue light removed similar to LPS. (LPS is a light source where all colors are remo Scattering of light • Scattering by air molecules(Rayleigh scattering)is slrorgly wavelength dependent — blue tight scatters much mere eff:cientty(this is why the daytime sky is blue) • When the moor is down, the sky is naturally very di in the blue • Blue and white lights are the worst or astronomy • I ight also scatters from dust panicles in the atmosphere 6 3/27/2013 Filtering the LED with a product from&teals* blue light— wavelengths between 380 and 500 auteeri removed and the LED light engine becomes estemi -sting ancl .,pe,tra or Cool WI LED and Wenn Me*LED with and Est:slim& Without the Star Mandy,"Mt J L I— P. "'". Ir....tatnewerierarte• A . I :. rrotwo 111.•01.0 March 60,7012 Comparing these filtering results to LPS demonstrates the Improved Color Temperature & Color Rendition Achieved. 1=12111===i1t :7 ' Pj'ci‘grei3;inpyul-sPolarnber traffic light : • But SPD good for astronorrry I " - • Shielding is not so good for astronomy -41 ..••••• SPD of While LED Luminaire •Color is different than traffic light • But SPD is bad for astrorloorril •Shielding is good for astronomy SPD of Yellow LE Luminaire I •Color is different than traffic I •SPD is good for astronomy light •Shielding good for astronomy f ..111111.111. Mew ,1110:000111 COMM.1.3.1111P 114101171.1 relanDX.,Nd-rbt, kle 7 3/27/2013 The cool white LED with a filter is preferred for street lighting, but the warm white with filter may also be approved for use throughout the private sector for any outdoor applications. • Remembering rtai that the blue portion of the ,,._. color spectrum is removed, Color Coordinates a CRI of 58 is remarkable high 414 `"1 t.`.... `"�"` "`� and will render very good ' it- ,....— color recognition. taw Lz > i-_•rt- , S GA ________ ___ \ t 7., 5i:yy 0W at1 �x0 !s 0.01 a'` G0♦0,'v {100 ,x495 w.Y OGa�tlr 041 t is a01T3 ,... w 41 ,.. , L1 *Ws , Filtered Warm White Filtered Cool White - _ F .,A"4.:,l.lsi) a��' .,A"4.:, k 8 3/27/2013 i The highest priority for the County however is energy reduction. LED light sources are inherently point sources which can make the management of beam patterns very effective. Management of beam patterns allows the light to be directed to only where it is intended and increases the efficacy of the fixture. The manufacturer of the LED light engine,Fiti,a division of Foxconn,was carefully selected and is now producing measured productivity of up to 100 lumens per watt. i The filter,now an integral part of the light engine Tunable Yellow Light Engine(Hilo) EsteetnD is produced by Esterline a specialized manufacturer ».— serving the aerospace and defense industries. The control benefits have allowed the county to replace 180 watt LPS(total 226 watt usage) with 75 watt LED(total 83 watt usage)fixtures on a one for one basis and produce substantial energy savi ?'he County has now installed over 400 LED cobra-he with initial energy savings measurements of approximately 50%. for KWH CONSUMPTION FOR COUNTY HHL&STATE LIGHTS A,.10 Current LPS Fixtures in use P• wed LEDs 1111111 Blue 10% Estinded 55w *ALPS Estill/kid Estimated reelection 1SStui90w reduction reduction facto el KNM Fltred factor of KN l feclor a KM 01 used Tool teed used MAI Or an 101izM■--___ 3121LL®E■MIIIII■■■111■ MEE WE i EO:M 0 to MAIM IIMM7EIMM7MIIMMEMNII=IM 10 .• 'COWS LE IIIIIMMI11111111111111=111111■11111=111111111111 MEIN 14E■.-___ pal 1029=∎∎∎-11111M1111- NNW= ■IIIEIEN111■111ECIM■ 11■E"'ti.. r=_ $1.501.11• nual Savings ___ $0 $172,. 9 3/27/2013 •.sc OWEN..70 LEDS WPM.LED CONVERSION MAT 1012 • IPS TELCO Lli KWH TOTAL TOTAL TOTAL TOTAL OF FORM UNCUT PF”IXTURE KWH Cost/Sawre Cost/Rwure COST MUM WATTAGE WATTAGE MONTH MONTH MONTH ANIMAL ANNUAL 11 190 OUT 21 2,443 535 0423_ 311,211 135 0.105 *4 313 01*34 SMI 94144 34 10 0 144 49 1.647 533.31 SUS 51,111 17 SS 0004 MR 492 513 03 5 56 MAST SS ALBS TUC NATE&Tor Al COSTS SO 45 $2,177 _ 526,124 LED HELLO LED KWH TOTAL TOTAL TOTAL TOTAL OF HXTURE II LX PER FIXTURE MOWN AHPASAL AMPOUAL FIXTURES WATTAGE WATTA60 MONTH KWH/1/10 Cestflonwp Costgodure COST SS 7S 0083 131 2,431 55207 5153 513.121 as 2,431 LEE PAW IL TOTAL COSTS 50.20 51,094 513,129 LID CONVERSION APINUAL TAVING , Initial 12 939 Finding-s for • III It is difficult to mandate the many controls for lighting that would satisfy all the invested entities in the County of Hawaii, but it is agreed that Dark Sky's will be one of the new requirements island wide. Light pollution is a proble on all the Islands and the County of Hawaii wants to lead the way to eliminate this practice while achieving energy efficienc 10 3/27/2013 •All new installations of outdoor lights,both public and private will be required to have full shielding—with logical exceptions like outdoor sports events and emergency lighting. • Fixtures presently grandfathered in will be required to be up dated to fully shield as they are replaced. "+► • High mast airport lighting with fully shielded fixtures;+ If it can be done here it can be done for all applications. _ . 1 l l �', Designing specifically for the County of Hawaii: ROADWAY LIGHTING SeyE . :;tthrcu�t� CAW ROADWAY LCD LUMIHAHiC OMMOMMMIP aQr iii-rat 11 3/27/2013 Applying design to new roadway development KOAD WAY • • Establishing criteria tailored to the County environment. 12 3/27/2013 THE END- QUESTIONS? 13