This means that it won’t be possible for commuters to take a right turn from the rotary to enter the two sectors. Instead, they will have to travel all the way to the roundabout. Motorists have been advised to take alternative routes to enter these sectors.

The administration is planning to close all small rotaries and medians between busy roads in the city as part of an experiment to divert traffic.

Work has also started on temporarily blocking the median at the small rotary between Sector 37 and Sector 41.

Officials said to start with, they have chosen a north-south vertical road (Sector 34-35) and a horizontal road (Sector 37-41) to study the traffic situation.

“We are trying to look at the traffic situation on these two roads after the medians are blocked. It is only after the experiment is allowed to continue for some time that we will get to know where the bottlenecks are. If successful, the experiment will be replicated in other parts of the city,” said UT Chief Engineer S K Jaitley.

While the closing of the shorter road from one sector to the other will create problems for commuters, the other problem likely is the rush around the roundabout.

The problem is likely to compound at the Express roundabout at the Sector 34-35-21-22 junction, which has traffic signals.

The additional flow of traffic from the southern side is likely to cause another jam.