City Council
Staff Report
From: City Manager
Report Type: ACTION ITEMS
Lead Department: Transportation
Meeting Date: November 10, 2025
Report #:2509-5227
TITLE
Approval of the Four-Quadrant Gate System as the preferred Quiet Zone Implementation Measure at the Churchill, Meadow, and Charleston Rail Crossings as Recommended by the Rail Committee; CEQA status - categorically exempt.
RECOMMENDATION
The Rail Committee and staff recommend approving the Four-Quadrant Gate System as the Quiet Zone implementation Measure at the Churchill Avenue, Meadow Drive, and Charleston Road Rail Crossings for Quiet Zones along the Caltrain Corridor in Palo Alto.
EXECUTIVE SUMMARY
Implementation of Quiet Zones was identified as a Council Priority for Palo Alto in March 2024.
To this end, City staff completed a Quiet Zone Study to evaluate rail crossings at Churchill Avenue, E. Meadow Drive, and Charleston Road in accordance with Federal Railroad Administration (FRA) regulations. Rail Committee then considered initial findings on August 20, 2024 and directed staff to explore two options:
Implementing a four-quadrant gate system in order be eligible for a Quiet Zone; and Installation of a wayside horns system.
In accordance with state law, diagnostic and follow up meetings were held on these options with representatives from the FRA, California Public Utilities Commission (CPUC), and Caltrain. A public engagement meeting was also held to gather feedback from community members.
Community members expressed strong support for implementing Quiet Zones through the installation of Four-Quadrant Gate Systems. The current estimated cost for implementing wayside horns at the three locations is approximately $1.5 million, while the four-quadrant gate system at the three locations is approximately $4.1-5.6 million. The project will likely require funding through a combination of the City’s Capital Improvement Program funds and Measure K Business Tax revenue for either of the proposed alternatives.
On September 16, 2025, Rail Committee unanimously recommended the Four Quadrant Gate System for implementation of a Quiet Zone along the Caltrain corridor at the existing at-grade
rail crossings in Palo Alto at Churchill Avenue, E. Meadow Drive, and Charleston Road, and that this be agendized as an action item for the full City Council. This measure is intended as an interim improvement until permanent grade separations are constructed. Accordingly, staff is seeking approval to proceed with the installation of Four-Quadrant Gate Systems as the safety enhancement required to implement Quiet Zones at these crossings.
BACKGROUND & ANALYSIS
Palo Alto has four at-grade crossing locations with 104 daily Caltrain services in addition to unscheduled Union Pacific freight services. At each of these locations, Federal regulations require that locomotive horns produce sounds from 96 to 110 decibels for at-grade crossings and that trains begin sounding these horns 15–20 seconds before entering public rail grade crossings, and no more than one-quarter mile in advance. These train horns create noise impacts in neighborhoods surrounding railroad crossings in Palo Alto. The extent and severity of noise impacts is affected by a range of factors including horn noise level and character, ambient noise levels, and prevailing winds.
In September 2024, the Peninsula Joint Powers Board (JPB) completed a multi-decade project to electrify Caltrain operations. Following electrification, Caltrain and Cities along the Peninsula noted an increase in noise complaints related to Caltrain horns, which had initially been set toward the high end of the legal limit. In November 2024, Caltrain adjusted horn noise levels to the low end of the legal range.
The City of Palo Alto (City) has received several requests for consideration of a Quiet Zone (QZ) at crossings along the Caltrain Corridor. As part of the Palo Alto Council Priority process, implementation of quiet zones has been identified as a Council Priority consistent with the goals of Public Safety, Wellness and Belonging. For this reason, on March 4, 2024, City Council approved an agreement with Kimley Horn and Associates for performing a Quiet Zone Study (Staff Report 2311-2269)1.
As the first phase of the quiet zone project, the City of Palo Alto in collaboration with the City of Menlo Park conducted a QZ study for establishing a quiet zone at the Palo Alto Avenue/Alma Street crossing. The design of the improvements required for implementation of QZ at Palo Alto Avenue was completed in early 2025 and associated improvements are currently under construction. After the project is constructed, the City will be eligible to apply to the FRA for establishment of a quiet zone in which train horns do not need to be sounded under normal circumstances. Gate bells would still sound and emergency train horns use would be under the discretion of the train engineer.
The City is now undertaking the second phase of the quiet zone project for the remaining three 1 City Council Meeting, March 4, 2024; Consent Item SR# 2311-2269 https://portal.laserfiche.com/Portal/DocView.aspx?id=70841&repo=r- 704298fc
at-grade crossings of Churchill Avenue, E. Meadow Drive, and Charleston Road. Quiet zone improvements at these locations will serve as an interim measure to mitigate noise impacts before planned Grade Separations are constructed at these crossings.
The Federal Railroad Administration (FRA) Title 49 regulations establish safety requirements for local agencies that wish to mitigate train horn noise impacts by establishing Quiet Zones. The regulations require agencies to complete a quiet zone study to evaluate the Quiet Zone Risk Index (QZRI) and assess Supplemental Safety Measures (SSM) needed to make a crossing eligible for a quiet zone. In total, FRA lists fourteen recognized SSMs. Based on street geometry and nearby signal operations, the only feasible SSM identified for the three crossing locations under consideration in Palo Alto was a four-quadrant gate system.
After completing the initial review of the existing conditions and analysis of the crossings. Staff presented various options for consideration of QZ to the Rail Committee on August 20, 2024 (Staff Report 2405-3805).3 At this meeting, Rail Committee selected two alternatives to advance to concept development:
Option 1: Implementing a Four-Quadrant Gate System at Each Crossing to bring the QZRI below the existing Risk Index With Horns (RIWH) and qualify the crossings as quiet zones. This also satisfies the QZ implementation methodology of providing an approved SSM at each crossing within the quiet zone.
Option 2: Implementing Wayside Horns, which would not qualify the crossings as quiet zones, but would reduce and localize noise impacts. Wayside horns are allowed to be installed at crossings that are already equipped with flashing lights and automatic gates.
The horns must sound in the same sequence and at the same decibel level as train horns, and may be placed on the warning device, or installed on a separate post, and oriented to face the roadway and oncoming traffic.
Based on feedback from the Rail Committee, initial concepts for the two options above were prepared and discussed with CPUC, FRA and Caltrain staff at a pre-diagnostic and field diagnostic meeting held on October 22, 2024. The initial conceptual plans were then revised to incorporate feedback from diagnostic meetings.
City staff also conducted a public outreach meeting to seek feedback and comments on April 16, 2025. A total of 17 attendees participated in the community meeting. In addition, staff received several emails and phone calls. Residents generally supported Quiet Zones efforts, particularly full establishment of a Quiet Zone using the four-quadrant gate system. One resident, however, opposed the quiet zone concept citing potential safety concerns resulting from the “no horns” condition. Many residents viewed wayside horns as an insufficient measure for addressing project goals.
3 Rail Committee, August 20, 2024; Action item SR# 2405-3805 https://portal.laserfiche.com/Portal/DocView.aspx?id=87322&repo=r-704298fc In addition to community input, the project consultant team undertook case study reviews from across the country, which suggest potentially lower operational and maintenance concerns associated with quadrant gates relative to wayside horns. This difference may be due to the higher prevalence of quadrant gates and correspondingly lower number of suppliers and technical support available for wayside horns. In some cases where wayside horns have been installed, local agencies have subsequently chosen to remove the horns due to ongoing maintenance issues and the time it takes to repair a faulty wayside horn system. In addition, some local agencies noted that railroad engineers continued to use locomotive horns even after wayside horns were in operation.
Both the FRA and CPUC noted that the Caltrain corridor sees a significant level of train collisions, given its high speed, high volume and proximity to urban and suburban areas. Wayside horns do not provide an added barrier to entry of the track area, where four-quadrant gates would provide additional gates on the “departure” side of the railroad track. Relative to wayside horns, the four-quadrant gate system would enhance the barrier to entry to the tracks and reduce the potential for gate go-arounds, thereby reducing the ability of users to enter the trackway while a train is operating in the area.
On the other hand, wayside horns cost less and retain the warning mechanism for approaching trains. Both strategies deviate from Caltrain’s standard practice limiting locomotive horn use.
These measures are implemented by local agencies to reduce noise, and because they are initiated by the City, certain responsibilities—including maintenance, operations and other risks—may shift to local agencies.
While the City is proceeding with grade separation projects, in the absence of grade separation, the Four Quadrant Gate System has been identified as the required mitigation measure needed to support the future high speed rail. It would therefore need to be implemented in order for High Speed Rail to operate in the area.
In terms of total cost, implementation of wayside horns is typically less expensive than the Four- Quadrant Gate System. The current estimated cost for implementing wayside horns at the three locations is approximately $1.5 million, while the four-quadrant gate system at the three locations is approximately $4.1-5.6 million. The project will likely seek funding through a combination of the City’s Capital Improvement Program funds and Measure K Business Tax revenue for either of the proposed alternatives. As noted above, four-quadrant gate systems are identified as required environmental mitigation measures for the California High-Speed Rail project, which may present an opportunity for the City to pursue funding through that program.
However, the California High-Speed Rail project is currently facing funding challenges, and therefore, the likelihood of securing funding from that source is considered very limited.
Regarding installation time, staff will need to complete similar steps for both alternatives, including developing agreements, conducting reviews, and obtaining approvals from the CPUC, Caltrain, and FRA. Given the potential for limited involvement from these external agencies and the relatively lower design complexity of the wayside horn system, its installation is anticipated to require approximately 36 to 42 months. This represents a shorter timeframe compared to the estimated 42 to 60 months for installation of the Four Quadrant Gate System.
After considering a range of factors—including safety factors, construction costs, ongoing maintenance needs and technical support, regulatory compliance, community feedback and risk the Rail Committee on September 16, 2025 (Staff Report # 2507-4951) 5 unanimously selected the Four Quadrant Gate System for implementation of Quiet Zone along Caltrain corridor at the existing at-grade rail crossings in Palo Alto at Churchill Avenue, E. Meadow Drive, and Charleston Road as interim improvements until grade separations are constructed. In light of the potential shorter timeframe for wayside horn implementation and significance of this decision, the Committee also recommended the full City Council discuss this as an action item. Accordingly, subject to City Council concurrence, staff is seeking approval to proceed with the installation of Four-Quadrant Gate Systems as the safety enhancement required to implement Quiet Zones at these crossings.
More recent discussion with Caltrain indicated a higher cost to implement Four Quadrant Gate Systems at these three crossings and has estimated the cost to be in the range of $5.0 to 5.6 million for Four Quadrant Gates Systems that include Caltrain project management and oversight. Additionally, it was noted that if Caltrain proceeds with both the design and construction phases, utilizing on-call consultants and contractors could lead to greater efficiencies with respect to the implementation of improvements—potentially reducing the implementation timeline for the four-quadrant gate systems to 36 months.
FISCAL/RESOURCE IMPACT
The Quiet Zone Study is currently funded in the Transportation and Parking Improvements capital project (PL-12000). Funding for the study of $178,559 was included in the FY 2026 Adopted Capital Budget for PL-12000. Depending upon the City Council direction additional funding for the implementation will be subject to Council appropriation in future years as part of the annual budget process. Based on the Council direction for the recommended Quite Zone implementation, staff will return to Council to request appropriation of Measure K Business Tax revenue that was set aside by the Council for Transportation Safety projects for design and construction of improvements.
STAKEHOLDER ENGAGEMENT
Stakeholder engagement on this issue has included a community meeting on April 16, 2024, Rail Committee meetings on August 20, 2024 and September 16, 2025, and a diagnostic meeting with various stakeholders representing FRA, CPUC, and Caltrain on October 22, 2024.
Outreach for the community meeting included mailers to all residents within 1000’ radius of the 5 Rail Committee, August 20, 2024; Action item SR# 2507-4951 https://portal.laserfiche.com/Portal/DocView.aspx?id=222522&repo=r-704298fc crossings vicinity. Outreach for the Rail Committee meetings included noticing in the City’s Transportation newsletter and email blasts through the City Clerk’s meeting notification system.
Notices for all of these public meetings also included publishing on City calendar.
ENVIRONMENTAL REVIEW
This proposed project involves the installation of quadrant gate systems and is categorically exempt under CEQA. Section 15301(f) of the CEQA Guidelines provides a categorical exemption for the addition of safety or health protection devices used during construction or in conjunction with existing structures and facilities. In addition, CPUC Rule of Practice and Procedure
17.1(h)(A)(5) provides a CEQA exemption for alterations in railroad crossing protection, and Rule
17.1(h)(A)(6) provides a CEQA exemption for crossing alterations described in Guideline 15301(c) and (f). Based on these exemptions installation of the four quadrant gate systems does not require additional CEQA review.
ATTACHMENTS
Attachment A: Palo Alto Quiet Zone Report
APPROVED BY:
Ria Hutabarat Lo, Chief Transportation Official