Drowsy And Distracted Drivers Cause 80% Of Crashes

A new government study sheds light on the cause of most crashes -- and the results are startling. Prior analysis of crashes showed "driver inattention" to be responsible for only 1 out of 4 crashes.

1 minute read

April 25, 2006, 6:00 AM PDT

By Irvin Dawid


"Distracted drivers were involved in nearly eight out of 10 collisions or near-crashes, says a study released Thursday by the government.

A driver's reaching for a moving object increased the risk of a crash or potential collision by nine times, according to researchers at the National Highway Traffic Safety Administration and the Virginia Tech Transportation Institute.

They found that the risk of a crash increases almost threefold when a driver is dialing a cell phone.

"All of these activities are much more dangerous than we thought before," said Dr. Charlie Klauer, a senior research associate at the institute. Data from police reports had estimated that driver inattention was a factor in about 25 percent of crashes."

"For more than a year, researchers studied the behavior of the drivers of 100 vehicles in metropolitan Washington, D.C. They tracked 241 drivers, who were involved in 82 crashes of various degrees of seriousness -- 15 were reported to police -- and 761 near-crashes. The air bag deployed in three instances."

Thanks to John Holtzclaw

Friday, April 21, 2006 in Associated Press via San Francisco Chronicle

Young Professional

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 and Environmental 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 and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

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

September 16, 2026 - Zachary Whalen

Geese flock to a frozen pond in Aurora, Colorado. There are houses in the background.

Colorado’s Largest Data Center Could Rise Next to Homes — Without a Public Hearing

The proposed campus would consume 11 times the power of Denver International Airport; as it has across the country, opposition mounts.

September 17, 2026 - Capital & Main

The Hoover Dam blocking the Colorado River. The river's water level is noticeably low. The cliffs surrounding the blue water are brown and jagged.

US to reduce Colorado River water deliveries to Mexico

A new Colorado Treaty amendment reduces Mexico’s Colorado River water allocation by 250,000 acre feet.

September 11, 2026 - The Arizona Republic

A busy highway in Richmond, with construction and the city visible in the background.

'This is going to be painful:’ Virginia stares down $1.7 billion funding gap for highway maintenance

The state may address the deficit by shifting $290 million from its construction budget to maintenance projects.

15 minutes ago - The Virginia Mercury

The Gross Reservoir, a large body of water surrounded by trees and mountains.

Judges permit Denver to divert 77,000 acre feet from the Colorado River for reservoir expansion

Overuse and climate change have caused the Colorado River’s water levels to plummet.

September 18 - Inside Climate News

Passengers board an Amtrak train under a cloudy sky.

Amtrak, CN end decades-long dispute with eight-year agreement

The new operating agreement establishes an updated framework for the companies to work together, including processes to resolve disputes.

September 18 - Mass Transit