A1 road (Latvia)

The A1 highway (Riga (Baltezers) - Border of Estonia (Ainaži)), also known as the Tallinn highway is a national road in Latvia, which connects the Riga bypass with the Estonian border at Ainaži. The highway continues in Estonia as highway 4 until Tallinn. A1 is fully covered in asphalt, and its length in Latvia is 101,7 km. The highway is part of European route E67 and, starting from Lilaste until the Estonian border, does not move further than 6 km from the coast of the Baltic Sea.

As of 2025, the speed limit on the A1 highway (Riga (Baltezers) – Estonian border at Ainaži) no longer includes any 100 km/h sections. On the Saulkrasti bypass and other previously designated segments, the maximum permitted speed outside populated areas is now uniformly set at 90 km/h. The speed limit along Ādaži remains 80 km/h, and throughout all other sections outside populated areas, the standard limit is also 90 km/h. These regulations are enforced to maintain road safety and reflect current traffic management practices.