Tue07292014

News

LASD, BCS boards finalize 5-year agreement

LASD, BCS boards finalize 5-year agreement

Bullis Charter School board members unanimously approved a five-year agreement with the Los Altos School District just before midnight Monday. The agreement, also unanimously approved by LASD trustees earlier in the evening, outlines facilities uses ...

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Schools

MVLA rolls out laptop integration this fall

MVLA rolls out laptop integration this fall


Town Crier File Photo
Starting in the fall, daily use of laptops in the classroom will be standard operating procedure for students at Los Altos and Mountain View high schools as the Mountain View Los Altos Union High School District launches a pil...

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Community

Generations blend behind the scenes at 'Wizard of Oz'

Generations blend behind the scenes at 'Wizard of Oz'


Altos Youth Theatre and Los Altos Stage Company rehearse a scene from “The Wizard of Oz.” ELIZA RIDGEWAY/ TOWN CRIER

A massive troupe of young people and grownups gathered in Los Altos this summer to stage the latest iteration of a childhood sta...

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Sports

Football in July

Football in July


Town Crier file photo
Mountain View High’s Anthony Avery is among the nine local players slated to play in tonight’s Silicon Valley Youth Classic.

Tonight’s 40th annual Silicon Valley Youth Classic – also known as the Charlie...

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Comment

Pools should be included: Editorial

Los Altos residents should be receiving calls this week from city representatives conducting a survey to determine priorities for a revamped Hillview Community Center.

Notice that we did not say “civic center” – chastened by a lack of public support...

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Special Sections

Looking for life without lows, local diabetic tests artificial pancreas

Looking for life without lows, local diabetic tests artificial pancreas


Photo by Ellie Van Houtte/Town Crier
Dr. Trang Ly, left, reviews blood sugar readings on a smartphone with Los Altos resident Tia Geri, right, and fellow participant Noa Simon during a closed-loop artificial pancreas study for Type 1 diabetics.
...

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Business

Palo Alto law firm coming to 400 Main

Palo Alto law firm coming to 400 Main


Ellie Van Houtte/ Town Crier
Longtime Palo Alto law firm Thoits, Love, Hershberger & McClean plans to open an office at 400 Main St. in Los Altos after construction is complete in November.

A longtime Palo Alto law firm plans to expand int...

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Books

"Frozen in Time" chronicles harrowing WWII rescue attempts


Many readers can’t resist a true-life adventure story, especially those that shine a spotlight on people who exhibit supreme courage in the face of adversity and end up surviving – or not – against the odds.

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People

RICHARD PATRICK BRENNAN

RICHARD PATRICK BRENNAN

Resident of Palo Alto

Richard Patrick Brennan, journalist, editor, author, adventurer, died at his Palo Alto home on July 4, 2014 at age 92. He led a full life, professionally and personally. He was born and raised in San Francisco, joined the Arm...

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Travel

Travel Tidbit: Ritz-Carlton, Lake Tahoe offers spa getaway

Travel Tidbit: Ritz-Carlton, Lake Tahoe offers spa getaway


Courtesy of Ritz-Carlton
The Ritz-Carlton in Lake Tahoe offers fall getaway packages that include spa treatments and yoga classes.

Fall in North Lake Tahoe boasts crisp mornings and opportunities to spend quality time in the mountains. Specially ...

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Stepping Out

PYT stages 'Shrek'

PYT stages 'Shrek'


Lyn Healy/Spotlight Moments Photography
Dana Cullinane plays Fiona in Peninsula Youth Theatre’s “Shrek The Musical.”

Peninsula Youth Theatre presents “Shrek The Musical” Saturday through Aug. 3 at the Mountain View Center for the Performing Arts...

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Spiritual Life

Foothills Congregational: 100 years and counting

Foothills Congregational: 100 years and counting


Courtesy of Carolyn Barnes
The newly built Los Altos church in 1914 featured a bell tower and an arched front window. Both continue as elements of the building as it stands today.

Foothills Congregational Church – the oldest church building in L...

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Magazine

Festival features fun for everyone

Festival features fun for everyone


TOWN CRIER FILE PHOTO
The Los Altos Arts & Wine Festival boasts more than 375 craft and arts booths.

This weekend’s 35th annual Los Altos Arts & Wine Festival promises to be jam-packed with fun activities for just about everyone. The eve...

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Speed limits: A lesson in physics: Other Voices

Note: The Los Altos City Council voted Aug. 20 to retain the city’s current speed limits. The following piece was written before that action, but the subject matter remains relevant – thus its inclusion here.

It makes sense for the city of Los Altos to periodically reconsider speed limits on local streets. I applaud the use of the extensive data generated by the recent traffic survey. However, using data to make traffic safety decisions without considering the laws of physics can be dangerous.

The distance a car travels from the moment the driver decides to brake to the point of stopping is not determined by a simple ratio involving the speed. The car travels some distance while the driver is reacting to the obstacle in the road, before the brakes are applied. The car travels an additional distance while braking that depends on the square of the initial velocity. The combination of these two distances is the stopping distance.

Using typical numbers, a car traveling 30 mph will have a stopping distance of 109 feet. If the speed of the car is increased by 17 percent to 35 mph, the stopping distance increases to 136 feet, a 25 percent increase. The proposed 40 percent increase in the speed limit on Grant Road between Homestead Road and Grant results in a 60 percent increase in stopping distance. This nonlinear relationship between speed and stopping distance is not intuitive for drivers. It results in a dangerous hazard for pedestrians, cyclists, wayward animals and other drivers on residential streets.

Physics also sheds light on the relationship between vehicle speed and pedestrian deaths. The energy of the collision depends on the square of the speed. This explains why 5 percent of pedestrians struck by a car going 20 mph are killed, while 45 percent struck by a car going 30 mph are killed. Increasing speed increases the likelihood of collisions with pedestrians and the chances of a fatality from the collision.

I understand the reasoning behind using the average speed of traffic to set speed limits. It prevents the creation of speed traps that can punish safe drivers. However, the residential character of the streets being considered for an increase should trump the convenience of the drivers using them.

If the current speed limits had been enforced and traffic-calming measures implemented prior to the survey, the average speeds would have been lower. We should not allow scofflaws that value a few seconds of their own time more than the safety of children crossing the street to set the speed limit.

The city of Los Altos has a problem regarding pedestrian safety. According to the California Office of Traffic Safety, we ranked 13th out of 93 similar cities for pedestrian injury accidents, and sixth for cyclists. This is unacceptable for a community that characterizes itself as a “village.”

I urge members of the Los Altos City Council to use their discretion to keep the current posted speed limits, as they wisely did in 2007. They should instead use the traffic survey data to develop measures to slow drivers down. This would be a decision based on the data and sound physics.

Daniel Burns is a Los Altos resident who teaches Advanced Placement Physics at Los Gatos High School.

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