Why take action on traffic lights

The objective is to ensure travel safety while encouraging sustainable mobility. For example:

Installation of cycling infrastructures

• Establishment of priority measures for buses
• Improvement of comfort for vulnerable users (pedestrians, cyclists, etc.)

Duration of the work operations

Changing traffic lights at an intersection generally takes 24 to 48 hours, depending on the scope of the work. However, these improvements involve underground infrastructures which are used to connect the traffic lights. If these infrastructures are damaged or outdated, underground work operations lasting three to five weeks are required to replace them.

Impacts of the work

These work operations entail temporary impacts on traffic in the intersection zone. 

It is sometimes necessary to close a lane, or a direction in full. In this case, traffic in alternating directions is used, with a police presence. 

The closure of sidewalks may be required to perform certain tasks, but access to nearby buildings is maintained at all times. 

In certain cases:

• Bus stops near intersections could be moved.
• Parking could be prohibited temporarily in the concerned zone.
• Audible signals for people with a visual impairment could be deactivated.