The signal cabinet at the corner is humming, the box camera on the mast arm is pointed down at the stop bar, and inside the controller a log file is writing a line every tenth of a second: WALK on, WALK off, flashing hand, countdown 15, countdown 14, countdown 13. By the time the ambulance pulls away from the intersection, that file already knows more about what happened than any of the witnesses standing on the curb.
Pedestrian signal logs used to be an engineering artifact. Something a traffic department pulled when retiming an intersection, not something a lawyer asked for. That has changed. The countdown display on the pole is backed by a timestamped record, and in a right-of-way fight that record is turning into the first exhibit anyone looks at.
The Pedestrian Who Entered on a Fresh WALK
Start with the cleanest fact pattern. A pedestrian steps off the curb when the walking person is lit, a turning driver clips them in the crosswalk, and the driver tells the officer the pedestrian darted out against the hand. In the old version of this case, the officer writes down two stories and picks one.
The signal log tells a different kind of story. It shows the exact second the WALK indication came on for that crosswalk, the exact second the flashing hand started, and the exact second the countdown began ticking from its programmed value.
Line that record up against a nearby traffic camera, a transit bus’s forward camera, or the pedestrian’s own phone timestamp, and the moment of entry stops being a he-said-she-said. The person who stepped off during WALK had the right of way, and the log says so down to the tenth of a second. A personal injury firm that knows to pull the controller data within days, not months, often changes the shape of the file before an adjuster ever makes an offer.
The Pedestrian Still in the Crosswalk at Zero
The harder case happens inside the countdown itself. A pedestrian is halfway across when the number drops to single digits, the light changes, and a driver with a green turn arrow swings through and makes contact.
Defense counsel points at the countdown display and argues the pedestrian should have been clear. The regulation doesn’t say what the defense wants it to say. Federal guidance from the FHWA treats the countdown as information for pedestrians already in the crosswalk, not a deadline that strips them of right of way when it hits zero.
An FHWA interpretation on audible countdowns made that explicit, discussing pedestrians who are still in the crosswalk when the count reaches zero and treating them as people the signal is still protecting. A countdown at 3 is not a legal order to vanish.
The signal log earns its keep here. It can show the WALK was only, say, 7 seconds long before the flashing hand began, and that the pedestrian entered during a legitimate WALK phase. A plaintiff who can prove entry on WALK is in a very different posture than one who stepped off during flashing hand, and the log is what tells those two cases apart.
The Pedestrian Who Started on Flashing Hand
Then there’s the case the signal log can hurt. A pedestrian steps off during the countdown itself and gets hit. Here the record is less friendly to the plaintiff: it will show the WALK had already ended, the flashing hand was displayed, and the countdown was already running when the person entered.
That doesn’t end the case, but it changes the questions. Was the clearance interval long enough for someone walking at a normal pace to finish crossing? Was it long enough for an older adult, a kid, or someone with a cane?
The FHWA timing manual walks through how walk and clearance intervals get calculated, and the assumed walking speed used in that math is among the most contested variables in these cases. An intersection timed for a brisk pedestrian can be a trap for anyone slower, and the log is what proves the timing in effect that day.
Pull Data and Preserve
Signal controller data isn’t kept forever. Retention varies by agency and vendor, and some systems overwrite high-resolution logs within days or weeks. A preservation letter has to go out early, and it has to name the right things.
Pull all of it before an insurer’s investigator does, and before the next retiming cycle wipes the timing plan that was in effect.
The Record Reorders Who Pays
Signal data doesn’t decide a case on its own. It reorders the conversation. An adjuster who opens the file and sees a certified controller log showing a WALK indication at the moment of entry is working from a different starting point than one who sees only a diagram and conflicting statements. Settlement ranges move.
Comparative fault arguments narrow. The countdown on the pole was designed to inform the person in the crosswalk. It’s informing everyone else too, long after the intersection has cleared.
