Skip to Content
Streetsblog New York City home
Streetsblog New York City home
Log In
Streetsblog

Have Red Light Speed Cameras Saved Lives in Maryland?

Today on the Streetsblog Network, we've got a post from The WashCycle about speeding, new red light cameras and a reduction in fatalities in Montgomery County, Maryland. Police there report that "a 2008 study of 11 camera locations found a 25 percent reduction in crashes on the roads where the speed cameras were located." Deaths have gone to 9 from 19 over a the same period last year. While the WashCycle cautions against reading too much into a relatively small amount of data, they also say the cameras have likely been effective. They also report on some novel citizen objections to the technology:

136414178_b9bb1f3508_m.jpgPhoto by Michael Patrick via Flickr.

It is reasonable to assume that the cameras should get some credit -- if not the lion's share. As Prof. Steven Dutch puts it, "Correlation doesn't prove causation when there is no plausible link between two phenomena, or when there is some more plausible cause. But if there is a plausible link, then correlation is very strong evidence for causation."

I've heard several arguments against speed cameras; such as privacy issues, not being able to face your accuser, manipulation of the data or circumstances to increase violations and, thus, revenue. But this is a new one:

"'I am against the speed cameras. No. 1, I don't think they pick up one of the major hazards on our roadways in Montgomery County right now -- bicyclists,' resident Reardon Sullivan told the Montgomery County Council."

Really? Bicyclists? Not drunk drivers? Not inattentive drivers? Especially since we're talking about speed cameras (not red light cameras) -- and it is very difficult for cyclists to speed.

More from around the network: The National Journal asks the experts what difference an 18-month delay in the transpo bill would actually make; World Streets talks about scientific methods for reducing driving; and The Overhead Wire looks at transit-oriented development in a down economy.

Stay in touch

Sign up for our free newsletter

More from Streetsblog New York City

Justice Dept., Citing Streetsblog Reporting, Threatens to Sue NYPD Over Cops’ Sidewalk Parking

The city is now facing a major civil rights suit from the Biden Administration if it doesn't eliminate illegal parking by cops and other city workers.

April 19, 2024

What to Say When Someone Claims ‘No One Bikes or Walks in Bad Weather’

Yes, sustainable modes are more vulnerable to bad weather. But that's why we should invest more in them — not less.

April 19, 2024

NYC Transit’s New Operations Planning Chief Wants To Fight ‘Ghost Buses’

One-time transit advocate and current MTA Paratransit VP Chris Pangilinan will oversee bus and subway operations for the whole city.

April 19, 2024

Friday’s Headlines: Gimme Bus Shelter Edition

The days of the Landmarks Preservation Commission reviewing every proposed bus shelter in landmarked districts may be no more. Plus more news.

April 19, 2024

Deal Reached: Hochul Says ‘Sammy’s Law’ Will Pass

The bill, though imperfect, has been four years in the making.

April 18, 2024
See all posts