Palo Alto delays Caltrain quiet zone over traffic safety concerns

The City of Palo Alto is postponing the creation of a federal "quiet zone" at its northern Caltrain crossing while it addresses traffic‑congestion problems. The city has been working toward quiet‑zone designations at four grade crossings—Palo Alto Avenue, Churchill Avenue, Meadow Drive and Charleston Road—by installing median islands, bicycle striping and four‑quadrant gate systems.

Although the required upgrades for the Palo Alto Avenue crossing were completed in June, officials say the Rail Sentry LiDAR system used by Caltrain detected vehicles backing onto the tracks from nearby El Camino Real, creating a safety risk. City spokesperson Meghan Horrigan‑Taylor said additional safety measures are needed before the horn can be silenced. In response, the city has stepped up police monitoring of the crossing at no extra cost, and City Manager Ed Shikada indicated the effort will continue.

The delay means residents will continue to hear the train horn, which can reach 100 decibels, until the traffic‑related issues are resolved and the Federal Railroad Administration grants quiet‑zone approval.