Eliminating the Dangerous 'Waze Left'

Vocal users of the wildly popular navigation app Waze have pushed the company's developers to look for a solution to its routing algorithm's tendency to send drivers turning left through crowded intersections.

1 minute read

September 25, 2015, 11:00 AM PDT

By James Brasuell @CasualBrasuell


"The navigation app Waze is beloved for exploiting shortcuts, avoiding traffic, and proving that the shortest distance between two points is not always a straight line," according to a post by David Yanofsky. "But its sinuous directions can also be a source of annoyance for drivers, who are often asked to make treacherous left turns through oncoming traffic at dicey intersections."

Yanofsky reports, however, that the company is studying ways to remove the so-called "Waze left" from its routing algorithm. The company is responding to user feedback and media pushback, given the much greater dangers associated with turning left. The article goes on to survey some of the user feedback available online, as well as some specific examples of "Waze lefts" as provided by streets found in the city of Los Angeles.

Monday, September 21, 2015 in The Atlantic

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Use Code 25for25 at checkout for 25% off an annual plan!

Redlining map of Oakland and Berkeley.

Rethinking Redlining

For decades we have blamed 100-year-old maps for the patterns of spatial racial inequity that persist in American cities today. An esteemed researcher says: we’ve got it all wrong.

1 hour ago - Alan Mallach

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

May 14, 2025 - Diana Ionescu

Front of Walmart store with sign.

Walmart Announces Nationwide EV Charging Network

The company plans to install electric car chargers at most of its stores by 2030.

May 7, 2025 - Inc.

Public Market sign over Pike Place Market in Seattle, Washington with pop-up booths on street.

Seattle’s Pike Place Market Leans Into Pedestrian Infrastructure

After decades of debate, the market is testing a car ban in one of its busiest areas and adding walking links to the surrounding neighborhood.

15 minutes ago - Cascade PBS

Yellow and silver light rain train in downtown Long Beach, California.

The World’s Longest Light Rail Line is in… Los Angeles?

In a city not known for its public transit, the 48.5-mile A Line is the longest of its kind on the planet.

2 hours ago - Secret Los Angeles

Man reaching for young girl sliding down playground slide.

Quantifying Social Infrastructure

New developments have clear rules for ensuring surrounding roads, water, and sewers can handle new users. Why not do the same for community amenities?

3 hours ago - Happy Cities