In 2021, the highest traffic volumes were exiting Tallinn, with AADT measured at 35,000, though this figure drops noticeably past Laagri.

[2] Being the only highway on the network that services over 1000 trucks across its entire length, congestion and dangers arising from frequent overtaking are a major issue.

[4] The end of the 1930s saw large-scale construction works planned on the route Laatre-Pärnu-Tallinn, to accommodate foreign visitors travelling by car to the 1940 Helsinki Olympics.

The first international discussions around Via Baltica, a highway connecting Tallinn, Riga, Kaunas and Warsaw were held in 1988.

[10] Although progress has not been as successful as envisaged then, the tenets of these discussions are still held firm and eventual full development is at least ideally expected.

The road turns left onto Pärnu bypass, which, while having 2+2 lanes, has at-grade intersections and traffic lights.

The Pärnu-Uulu 2+2 section begins here on a slightly straightened route as compared to before, culminating in a trumpet interchange with the T6 in Uulu.

The highway continues along the coast, meeting only the boroughs of Võiste and Häädemeeste before culminating on the Latvian border in Ikla.