Adaptive Traffic Signal Control (ATCS/CoSiCoSt)

🤖 AI-generated summary · 🔎 Last verified 2026-08-02

This overview was generated with AI from the public sources listed below and checked against them before publication. It has not had a complete human fact-check — treat it as a starting point and follow the sources.

How this atlas is made · What “last verified” means · What “source-checked” means

Hyderabad's flagship signal upgrade sounds citywide, but only 122 of the 334 signals it covers run adaptive logic — the rest are the fixed-time system it was meant to replace.

Outcome🔄 Ongoing

Evidence📰 Mediagrades the sourcing — this entry states no impact figure

what does this mean?

The strongest source is press reporting; no primary evaluation was located. It grades who did the looking — not how well the project went. All four grades →

Run byGreater Hyderabad Municipal Corporation (GHMC), with signal-control software from C-DAC (Centre for Development of Advanced Computing)

Scale🏙️ City-wide

Part of 1001 Smart Cities — 1,167 documented projects · 🏙️ 5 more in Hyderabad · 🚦 Traffic management guide · 🚲 Mobility projects

The Greater Hyderabad Municipal Corporation (GHMC) rolled out camera-based adaptive signal control at select junctions starting in 2022, using the Composite Signal Control Strategy (CoSiCoSt) developed by India's Centre for Development of Advanced Computing (C-DAC). Camera detectors read approaching traffic and adjust green time, cycle length and offsets in real time instead of running a fixed timer. Of the 334 signals covered by this modernisation project, only 122 actually run the adaptive logic — the remaining 212 are older fixed-time HTRIMS controllers, plus 94 separate pedestrian pelican crossings. Neither GHMC nor C-DAC has published an independent before/after measurement of travel time, delay or emissions.

Live 📅 since 2022

🎓 Lesson

A city can install adaptive signal hardware and still leave most of its modernised corridor running the fixed-time system it was meant to replace, with no independent measurement of whether the upgrade works.

🚲 Mobility Traffic management Sensors & IoT Safety & security

Sources

↗ Telangana TodayGHMC/C-DAC ATSC rollout, CoSiCoSt technology, signal counts, expected (not measured) benefits.

↗ NewsMeterBreakdown of 122 ATCS + 94 pelican + 213 HTRIMS signals, camera-based detection, solar/battery backup.

↗ The South FirstProject scope reduced from 384 to 334 signals (212 HTRIMS + 122 ATCS), GHMC as operator, no measured results reported.

Continue exploring

Compare this project

🇮🇳 Bengaluru Adaptive Traffic Control System · Bengaluru Same C-DAC CoSiCoSt signal software, same country — Bangalore reached 169 junctions, Hyderabad's adaptive logic covers just 122 of 334. 🇮🇳 Pune's Adaptive Traffic Management System (ATMS) · Pune Another Indian adaptive-signal rollout with a rocky start — neither city has published an independent measurement of the upgrade. 🇻🇳 HCMC Intelligent Traffic Control Center · Ho Chi Minh City Both pair adaptive signal control with cameras, but Ho Chi Minh City's system is built around ANPR enforcement, not just traffic flow.

Explore the wider context

📟 A Reading Is Not a Decision 📖 Automated speed enforcement (speed cameras)📖 Integrated command and control centre (ICCC)📖 Adaptive traffic signals

📎 Cite this project

1001 Smart Cities (2026). “Adaptive Traffic Signal Control (ATCS/CoSiCoSt)” — Hyderabad, India. The Smart City Atlas. https://1001smartcities.org/projects/hyderabad-atcs-adaptive-signals/ (last verified 2026-08-02). Data: CC BY 4.0.

The underlying data is free to reuse with attribution — see the open data page.

🚩 Report an error · 🔔 Follow changes to this entry (RSS)