traffic management

How teens can be safer drivers

Motor vehicle crashes are the leading cause of death for teenagers in the U.S. Will raising the requirements for a driver’s license help?

4th traffic light would benefit pedestrians and drivers

Adding a white phase to stoplights that communicate with autonomous vehicles would decrease delays at intersections by 25%, researchers say, even when pedestrians are added to the model.

Traffic deaths decline slightly, but remain higher than before the pandemic

Safety experts have struggled to pinpoint why traffic and pedestrian fatalities have remained so stubbornly high.

Why cities should consider roundabouts

COMMENTARY | An alternative to traditional signalized intersections, roundabouts can substantially offset the dangers posed by larger vehicles, ensuring that any potential impact is less severe due to moderated speeds and oblique angles of collision.

County’s advanced mapping tool supports development decisions

Henry County, Georgia, used it to decide where freight facilities should go. But the computer-based tool could be repurposed to help other communities address their hot-button issues.

Connect with state & local government leaders

Traffic tickets can be profitable, and fairness isn’t the bottom line in city courts where judges impose the fines

COMMENTARY | Research shows police officers issue more traffic tickets and judges impose more fines when their city gets the money and when the budget is tight. But if states change the rules about who keeps the money, the incentives for revenue maximization go away.

Round-the-clock speed cameras improve safety in a city that never sleeps

New York City saw a 25% drop in traffic deaths and a 30% decrease in tickets issued after state lawmakers let it operate their speed cameras on nights and weekends.

‘Connected’ self-driving cars can speed up travel time

COMMENTARY | By communicating with each other and traffic control signals, connected vehicles can adjust their speeds to avoid stopping at intersections.

Passions run high over speed limits, but data is hard to come by

A recent study by the AAA Foundation tried to determine whether drivers changed their habits with new speed limits. Instead, the group discovered the limits of the data states collect on the safety of their roads.

Cities paint the way to safer streets

COMMENTARY | It’s time for our country to embrace asphalt art as a creative, low-cost way to improve safety for pedestrians and cyclists.

Optimization model delivers faster emergency response

Researchers used historical traffic data to develop a model that calculates the most efficient routes for police and medical personnel traveling from dispatch locations to vehicle accident sites.

Two states get waivers for connected-vehicle tech

Intelligent transportation projects in Virginia and Utah can use cellular vehicle-to-infrastructure technology ahead of the FCC’s final adoption of C-V2X rules.

City pilots sensors that track street activity, detect conflicts

The devices will collect data on road users’ speed, turning movements and modes and paths of travel to inform safety initiatives and city planning.

Smart city lab tests IoT network to protect pedestrians, cyclists

Integrating both cars and pedestrians into an internet-of-things ecosystem ensures vulnerable road users are seen and drivers are alerted to their presence.

Smart cameras ID bus lane violators

To increase bus speeds in Washington, D.C., Metrobuses will be outfitted with automated cameras to spot and help process infractions.

IoT network delivers real-time data on parking availability

Data from low-power internet-of-things sensors buried under 4,500 on-street parking spaces will help Arlington County better understand the feasibility of demand-based pricing for metered curb space.

Connected vehicle data can improve traffic safety

Information gathered from vehicle sensors can efficiently inform decisions about road safety strategies.

Do traffic signals need a fourth light for self-driving cars?

A white glow could help traffic flow. Scientists propose adding a white light to traffic signals could keep roads safe as autonomous vehicles become more popular.

Smart street pilots aim to curb parking violations

Chicago plans to use cameras to enforce parking rules, boost safety for pedestrians and cyclists and streamline operations in commercial loading zones.

Tech keeps city’s fleet vehicles within speed limits

Active intelligent speed assistance technology has kept drivers from speeding and cut hard braking by more than a third, New York City Mayor Eric Adams said.