Thursday, October 2, 2014
YOLO COUNTY NEWS
99 CENTS

City to spotlight results of street light experiments

By
From page A1 | June 22, 2014 |

Learn more

What: Davis City Council meeting

When: 6:30 p.m. Tuesday

Where: Community Chambers at City Hall, 23 Russell Blvd.

Watch it live: Comcast Channel 16, AT&T U-Verse Channel 99 or on the city’s website at www.cityofdavis.org/media

City staff will shed light on the paused residential street light replacement project Tuesday night, giving the Davis City Council a series of options to consider before it flips the switch and green-lights the effort again.

Since last month — when the council ordered a pause in the replacement of half of the city’s roughly 1,300 street lights for residential areas after dozens of complaints about glare surfaced — city staff have gone deep in the tank with the help of the UC Davis California Lighting and Technology Center to experiment with ways of reducing glare and studying the effects of different colored lights.

Herb Niederberger, general manager of utilities, and Mitch Sears, sustainability program manager, have revealed the results of those experiments and have established a matrix the council could look at Tuesday night and choose the best path for the city to take as it completes installation of brighter LED lights.

UCD’s lighting center has been a boon to the city, the pair said in their report.

“As subject-matter experts operating from a public service mission basis, staff places higher weight on CLTC assessments than its own assessments or those of industry representatives or advocates,” the report said.

Two focuses of the CTLC have been on light shields and dimmed lights. Tests found that light shields did reduce stray light into residents’ yards, which city staff deemed “a good step forward.”

“In addition, staff perceived a significant reduction in glare and light spill side to side and backward from installation of the shields,” the report said. “However, glare and light spill across the street did not change and there was less light projected up and down the street due to sharper cut-off of the shield.”

A controlled experiment of dimmed lights was conducted on the evening of June 12 on Oyster Bay Avenue in West Davis, with 15 percent dimmed lights and 25 percent dimmed lights. The former showed no glare reduction and the latter showed only slight glare reduction. In all, there was little difference between the dimmed lights and the full standard LED lights.

Whether the council picks dimmed or shielded lights, city officials believe safety is not an issue with the new LED lights, despite past comments from the public who are worried about criminals more easily hiding in the shadows.

“Bicycle, pedestrian and general safety is assumed to improve under all options due primarily to more consistent lighting across the community,” the report said.

The solutions could cost the city anywhere from $33,000 to $150,000 out of the known variable costs.

The total $1.172 million cost of the project across all city streets will be paid for over a period of six years by $200,000 in energy and labor cost savings annually.

— Reach Dave Ryan at dryan@davisenterprise.net or 530-747-8057. Follow him on Twitter at @davewritesnews.

 

 

 

 

Comments

comments

  • Recent Posts

  • Enter your email address to subscribe to this newspaper and receive notifications of new articles by email.

  • .

    News

     
    Sunder wants to expand opportunities for all

    By Jeff Hudson | From Page: A1

     
    At Davis intersections, let’s be careful out there

    By Kim Orendor | From Page: C2 | Gallery

     
    Sunder supporters gather on Sunday

    By Special to The Enterprise | From Page: A3

    Trokanski discusses new project on ‘Davisville’

    By Special to The Enterprise | From Page: A3

     
    Learn more about Boy Scouts during upcoming events

    By Anne Ternus-Bellamy | From Page: A3

    Third-graders face high-stakes reading targets

    By The Associated Press | From Page: A3

     
    Learn how to ride a bike in Davis

    By Enterprise staff | From Page: A3

    Feinstein, Boxer depend on red-leaning Senate races

    By San Francisco Chronicle | From Page: A3

     
    Gallery hosts poetry night

    By Special to The Enterprise | From Page: A3

    Oktoberfest features Grand Isle Fire Brigade

    By Enterprise staff | From Page: A3

     
    Archer event set for Sunday

    By Special to The Enterprise | From Page: A4

    Per Capita: Tales from the back burner

    By John Mott-Smith | From Page: A4

     
    Sunflower power at the Winters Community Library

    By Enterprise staff | From Page: A4

    Tour gives opportunity to watch moonrise in the bypass

    By Special to The Enterprise | From Page: A4 | Gallery

     
    UC campuses aim to be more inclusive to LGBT students

    By Special to The Enterprise | From Page: A4

    Check out Soroptimists at info night

    By Enterprise staff | From Page: A4

     
    Register to vote by Oct. 20

    By Enterprise staff | From Page: A4

    Helping disabled ag workers stay in agriculture

    By Special to The Enterprise | From Page: A4

     
    Parenting advice on radio show

    By Special to The Enterprise | From Page: A4

    Unitrans persists through changing times

    By Lily Holmes | From Page: C6 | Gallery

     
    Up for a fun day trip? Take a bike to Bike Dog

    By Elizabeth Case | From Page: C8 | Gallery

    Volunteers are trained to help with train questions

    By Bob Schultz | From Page: A10 | Gallery

     
    There are plenty of fun activities around town

    By Enterprise staff | From Page: C13 | Gallery

    Getting from here to there by buses, planes and trains

    By Special to The Enterprise | From Page: C14 | Gallery

     
    .

    Forum

    Feeling shunned after tragedy

    By Creators Syndicate | From Page: B5

     
    A true vision for peace

    By Letters to the Editor | From Page: A6

    Drivers, just follow the rules

    By Letters to the Editor | From Page: A6

     
    Let’s fix the park deck

    By Letters to the Editor | From Page: A6

    ‘Maupin’s Law’ 2.0: Prevention is better than punishment

    By Special to The Enterprise | From Page: A6

     
    Tom Meyer cartoon

    By Debbie Davis | From Page: A6

    Choose Archer, Sunder, Adams

    By Letters to the Editor | From Page: A6

     
    Barbara Archer for school board

    By Letters to the Editor | From Page: A6

    Vote for change on board

    By Letters to the Editor | From Page: A6

     
    Poppenga considers all students

    By Letters to the Editor | From Page: A6

    Climate change is coming for you

    By Letters to the Editor | From Page: A6

     
    .

    Sports

    Despite 168 points allowed, PSU defense may not be lousy

    By Bruce Gallaudet | From Page: B1 | Gallery

     
    Bumgarner, Crawford help Giants slam Bucs

    By The Associated Press | From Page: B1 | Gallery

    Cheung paces Devils past Pacers on the pitch

    By Evan Ream | From Page: B1 | Gallery

     
    DHS JV runners shine in varsity events

    By Enterprise staff | From Page: B2

     
    Youth roundup: Diamonds swing to victories at Vineyard Classic

    By Enterprise staff | From Page: B2 | Gallery

     
    Sports briefs: DHS girls tennis goes three for three

    By Enterprise staff | From Page: B8

    .

    Features

    Davis robotics team pays it forward

    By Anne Ternus-Bellamy | From Page: A7 | Gallery

     
    .

    Arts

    Natsoulas to host mural conference

    By Special to The Enterprise | From Page: A9

     
    Wineaux: Picking the last rosé of summer

    By Susan Leonardi | From Page: A9

    Odd Fellows to screen classic Westerns

    By Enterprise staff | From Page: A9

     
    Robbie Fulks will visit ‘Live in the Loam’ on KDRT

    By Enterprise staff | From Page: A9

    Old Macs get new life at art exhibit

    By Enterprise staff | From Page: A9

     
    Woodland Opera House rounds up cowboy poetry, music

    By Enterprise staff | From Page: A9

    Music for brass, choir and organ set at DCC

    By Enterprise staff | From Page: A9

     
    .

    Business

    .

    Obituaries

    .

    Comics

    Comics: Thursday, October 2, 2014

    By Creator | From Page: B6