Dago Antov: narrower intersections at Reidi tee would lead to overload

Opting for narrower intersections at Reidi tee would translate to a 20-30% overload during rush hours, warns professor Dago Antov from TalTech who published his traffic analysis today.

Professor Dago Antov from the Department of Mechanical and Industrial Engineering of TalTech was asked to compare various traffic solutions for a short section that covers three junctions.

Antov noted that it would not be accurate to talk about the narrow and wide version of Reidi tee because his calculations cover only three adjacent intersections rather than the whole Reidi tee.

According to the professor, one of the junctions concerned is the intersection of Reidi tee and Narva maantee which is yet to be constructed. “The second junction is the regulated pedestrian crossing between Russalka and Kadrioru Park, and the third is what we know as the Russalka intersection which connects Pirita tee to Narva maantee,” said Antov.

We concluded that opting for narrower intersections of 3+3 lanes would lead to the risk of congestion especially during rush hours and in directions with heavier traffic,” explained Antov. “The overload on this relatively short section of 200 metres would amount to about 20-30% of the traffic flow if only 3+3 lanes are used meaning that this 20-30% would not be able to pass through the intersection during a single cycle of traffic lights.”

“This would notably increase waiting times and entail the risk that the intersections on this short strip could start interfering with each other,” added Antov. “The probability of congestions is close to zero if wider intersections of 4+4 lanes are used.”

According to Antov, it should be noted that Reidi tee is not designed for traditional traffic flow only as one of the reasons behind its constructions is to facilitate traffic to and from the Old Port. As much as a couple of hundred trucks could join the traffic flow in a short period of time. “Opting for the narrow version would mean that the construction of intersections will not improve the overall traffic situation,” warned professor Antov.