This is a list of roads designated B1. Roads entries are sorted in the countries alphabetical order.B1 road (Croatia), the designation of an expressway route in Croatia B1 road (Cyprus), a road in Cyprus B1 highway (Germany), a German road B1 road (Kenya), a road connected to the A1 road B1 road (Namibia), an important North-South road B1 road, a road connecting Akkaraipattu and Warapathanchenai B1 road may refer to: B1 road, a road connecting Downpatrick and Ardglass B1 road may refer to: B-1 corridor