The A1 is a national road in Latvia connecting Riga to Ainaži. The road is part of European route E67 and Latvian TEN-T road network. Ainaži is Latvian border city with Estonia, after Ainaži the road then crosses the border and turns into Estonian National Road 4. A1 was almost completely reconstructed from 2003 until 2007. Saulkrasti bypass was also built, prior to 2007 all A1 traffic ran through the 17 kilometer long coast city. Road was completely reconstructed from Riga to Salacgrīva, the 80 kilometer long stretch was also widened, with wider shoulders. The official speed limit of A1 is 100 km/h in summer and 90 km/h in winter. A1 is part of Via Baltica, which runs from Estonia to Poland.