A Bus Rapid Transit (BRT) system is a bus line designed to deliver fast, frequent and reliable service, comparable to a tramway, while maintaining the operational flexibility of buses.
BRT systems have become a cornerstone of urban and suburban mobility, particularly for cities seeking to expand public transport capacity without the high investment costs associated with tramways or metro systems.
They fully align with sustainable mobility policies, encouraging modal shift toward efficient, low-carbon public transport solutions.
Key Features of a BRT System
BRT systems differ from conventional bus lines through a combination of technical and operational features.
Dedicated Lanes and Segregated Rights-of-Way
Buses operate on dedicated lanes, separated from general traffic. This ensures:
- consistent travel speeds,
- reduced delays,
- high service reliability along the entire route.
Enhanced Accessibility
BRT infrastructure improves mobility for all users through:
- adapted platforms,
- ramps or automatic alignment systems,
- safe pedestrian routes for people with reduced mobility.
High Frequency and Reliable Scheduling
BRT systems are designed to minimize waiting times through:
- high service frequency during peak hours,
- extended operating hours,
- optimized traffic and service regulation.
High-Quality Stations and Real-Time Passenger Information
BRT stations are designed to offer a tram-like user experience, including:
- accessible platforms,
- comfortable shelters,
- dynamic signage,
- real-time passenger information systems.
Colas’ Expertise in BRT Projects
Colas supports local authorities and transport operators throughout BRT projects, including:
- line design and associated urban developments,
- construction of dedicated lanes, stations and intersections,
- integration within the existing urban environment,
- coordination with active mobility modes (cycling lanes and pedestrian paths),
- interface management between transport networks and urban uses.
Technical Performance and Sustainability
BRT infrastructure requires specialized expertise, including:
- pavement solutions adapted to repeated heavy loads,
- traffic flow optimization,
- low-carbon or permeable solutions depending on local contexts,
- acoustic and landscape treatments.
FAQ
Frequently Asked Questions About BRT SystemsA BRT system offers higher speed, frequency and comfort thanks to dedicated lanes, adapted rolling stock and well-equipped stations.
- reduced traffic congestion,
- lower greenhouse gas emissions,
- improved urban attractiveness,
- efficient service to underserved areas,
- controlled investment and operating costs.
Yes. BRT projects often integrate cycling infrastructure and safe pedestrian routes.
Colas operates across the entire value chain: feasibility studies, engineering, urban development, construction of dedicated lanes, landscape integration and intersection optimization.
No. BRT systems provide a more flexible and cost-effective alternative, well suited to urban corridors where demand is high but does not justify a tramway.
