Title:
Navigating Disruption: Passenger Experience and Staff Mitigation Strategies During the First Day of Singapore’s Circle Line Service Adjustments

Abstract
This paper examines the operational and passenger dynamics on the first day of service adjustments to Singapore’s Circle Line (CCL), which commenced on January 17, 2026, as part of a 30-month tunnel works project. Drawing on observational data from The Straits Times and stakeholder feedback, the study highlights the challenges of service rerouting, including increased waiting times and route confusion, while analyzing the efficacy of staff-mediated interventions such as crowd marshals, real-time crowd status tools, and shuttle services. The findings underscore the critical role of proactive communication and on-ground guidance in mitigating passenger anxiety during large-scale infrastructure disruptions. The study concludes with recommendations for optimizing future service adjustments.

  1. Introduction

Singapore’s Circle Line (CCL), a vital artery in the city-state’s public transport network, underwent significant service adjustments on January 17, 2026, to facilitate tunnel maintenance works. The adjustments, effective until April 19, 2026, required rerouted trains, shuttle operations, and temporary platform modifications. While such projects are common in mature transport systems, the implementation of service changes often introduces operational friction for passengers. This paper investigates the first-day experience, focusing on two key themes: passenger confusion exacerbated by altered routes and staff guidance strategies that ensured continued mobility. By analyzing observational data and stakeholder interactions, this study evaluates the interplay between infrastructure disruptions and user-centric adaptive measures.

  1. Background
    The Circle Line Context

The CCL, part of Singapore’s Mass Rapid Transit (MRT) system, serves 31 stations across the island, connecting residential, commercial, and retail hubs. Its closure or adjustment can disrupt the mobility of over 100,000 daily commuters. The January 2026 service adjustments followed a precedent set by the 2011 Downtown Line works and the 2020 Thomson–East Coast Line trials, where real-time communication and shuttle services were pivotal in managing passenger expectations.

Objectives of the Adjustments

The LTA initiated the service adjustments to repair aging tunnel segments between Paya Lebar and Mountbatten stations. While necessary for safety, the project required rerouting trains to operate on a single loop, creating shuttle services and necessitating passengers to transfer at key stations.

  1. Methodology

Data for this study were derived from:

Observational Fieldwork: The Straits Times (ST) conducted on-site observations at Paya Lebar and Mountbatten stations between 7:45 and 8:30 AM on January 17, 2026, documenting passenger flow, waiting times, and staff interventions.
Public Communication Analysis: Review of LTA-issued advisories, signage placement, and the functionality of the new crowd status tool.
Passenger Interviews: Informal feedback from 15 passengers, including testimonials from individuals like Ms. Karen Siau, a sales executive who detailed her experiences with pre-planning and staff assistance.

  1. Key Findings
    4.1 Challenges in Service Adjustments
    Increased Waiting Times: Trains to Mountbatten operated at 10-minute intervals, with shuttle services between Paya Lebar–Dakota–Mountbatten arriving every 8.5 to 9.5 minutes. Delays of up to 30 minutes were reported by some passengers, even with pre-planning.
    Route Confusion: Despite prior banners and advisories, passengers faced uncertainty about boarding the correct trains. The requirement to disembark at transfer stations (e.g., Paya Lebar or Mountbatten) added complexity to journeys.
    4.2 Staff Mitigation Measures
    On-Ground Marshaling: At least 10 crowd marshals per platform at Paya Lebar and Mountbatten stations actively guided passengers using loudspeakers and visual cues (light batons).
    Dynamic Signage: Repeated updates to station signage and temporary wayfinding aids were observed, with staff manually adjusting labels to reflect alternating train destinations.
    Real-Time Tools: The LTA’s crowd status tool provided live updates on platform congestion, while shuttle buses were deployed to divert overflow from key interchange points.
  2. Case Study: Paya Lebar Station

The 7:45–8:30 AM observation window revealed:

Smooth Passenger Flow: Despite increased waiting times, marshals maintained orderly queues, ensuring even distribution of passengers across train doors.
Proactive Communication: Staff engaged passengers directly, offering verbal instructions to differentiate between direct and connecting trains.
Passenger Testimonials: Ms. Karen Siau, a 63-year-old commuter, highlighted her successful navigation of the new system through early departure and staff consultation. However, she noted the need for clearer pre-adjustment education on shuttle train destinations.

  1. Evaluation of LTA Measures

The LTA’s multi-pronged approach demonstrated both strengths and areas for improvement:

Strengths:
The crowd status tool effectively reduced platform overcrowding.
Shuttle trains operated within acceptable frequency (8.5–9.5 minutes), minimizing extended delays.
Weaknesses:
Static signage failed to preemptively clarify route changes for unfamiliar commuters.
Shuttle train destinations (e.g., Mountbatten) required repeated verbal reinforcement by staff.

  1. Implications and Recommendations

To enhance future service adjustments, this study proposes:

Pre-Event Simulations: Conduct mock drills to familiarize passengers with alternate routes.
Interactive Digital Aids: Integrate augmented reality (AR) wayfinding apps to supplement physical signage.
Staff Training: Standardize protocols for marshals to address common passenger queries (e.g., transfer procedures).
Dynamic Signage: Install LED boards for real-time updates on platform displays.

  1. Conclusion

The January 17, 2026, service adjustments on the CCL exemplified the dual challenges of infrastructure upgrades: managing operational complexity while maintaining passenger trust. While the first-day experience revealed pockets of confusion, the presence of well-coordinated staff and adaptive tools like the crowd status system proved critical in mitigating disruptions. Future projects should prioritize proactive education and technological integration to ensure smoother transitions during service changes.

References
Land Transport Authority. (2026). Circle Line Service Adjustments: Information for Commuters.
The Straits Times. (2026, January 17). First day of CCL service adjustments: Some confusion but staff kept things moving.
Lee, J. (2020). Urban Rail Transit Management in Singapore. World Scientific.
LTA. (2025). Crowd Management Strategies for MRT Upgrades.