Atlanta expands pedestrian head-start signal timing at intersections to reduce turning conflicts and improve crosswalk safety

What is changing at Atlanta intersections

Atlanta is expanding the use of signal timing changes designed to give pedestrians a brief “head start” before drivers receive a green light. The approach—widely known in traffic engineering as a leading pedestrian interval—turns on the walk indication several seconds before parallel vehicle movements begin, increasing the likelihood that people in the crosswalk are visible to turning drivers.

The treatment is aimed primarily at reducing conflicts between pedestrians and motorists making right or left turns at signalized intersections, a common crash scenario in dense commercial districts and along multi-lane corridors.

How a pedestrian “head start” works

Under the revised timing, pedestrians typically receive an advance walk phase of roughly 3 to 7 seconds. During that time, turning traffic remains stopped. After the head start, vehicle traffic receives a green indication, and drivers are expected to yield to anyone already in the crosswalk.

Transportation agencies favor the treatment because it can often be implemented through reprogramming existing signal controllers rather than constructing new infrastructure, allowing relatively rapid deployment across a network of intersections.

Why the city is focusing on signal timing

Atlanta’s ongoing Vision Zero framework sets a long-term target of eliminating traffic deaths and severe injuries by 2040. Signal timing changes, including pedestrian head starts, fit within a broader strategy that also includes speed management, intersection redesign, and targeted upgrades on corridors with repeated serious crashes.

The city has also tested and deployed other pedestrian-oriented signal strategies in recent years, including a pilot pedestrian scramble that allows people to cross in multiple directions during an all-red phase for vehicles at a major Midtown intersection. These tools are typically used where pedestrian volumes are high and turning movements are frequent.

What safety outcomes research has found

Research and multi-city evaluations have linked leading pedestrian intervals to meaningful reductions in pedestrian-vehicle turning crashes. The mechanism is straightforward: pedestrians enter the crosswalk first, become more conspicuous, and are less likely to be surprised by a turning driver accelerating on the green.

However, outcomes can vary by intersection design, turning volumes, signal phasing, and driver compliance. Agencies commonly pair timing changes with complementary measures—such as improved crosswalk markings, daylighting near corners to improve sight lines, and turn restrictions—when conditions warrant.

What residents should expect at treated intersections

• Walk signals may appear to start “early” compared with the vehicle green.
• Drivers turning on green must yield to pedestrians already crossing.
• Pedestrians should continue to follow the walk/don’t-walk indications and remain alert for turning vehicles.

In practice, the change is designed to reduce ambiguity in the first seconds of a green phase—when a driver’s attention can be split between oncoming traffic, signal changes, and people stepping off the curb.

Implementation and accountability

As the city expands these treatments, performance is typically tracked through crash data, field observations of yielding behavior, and follow-up adjustments to signal timing. The effectiveness of a pedestrian head start depends not only on the seconds added at the beginning of the phase, but also on how well the intersection’s geometry, signage, and visibility support safe turning and crossing behavior.

City transportation officials have indicated that additional intersections are expected to receive pedestrian head-start timing as part of continuing safety work under the Vision Zero Action Plan.