Tag 'railway:signal:speed_limit:speed = 120'

Value histogram for key 'source'

• 3: estimate; extrapolate; survey
• 3: estimation; survey
• 2: estimate; survey
• 1: estimation
• 1: https://www.youtube.com/watch?v=Kd_Gw5qY3yk (Zeitindex 1:42)
• 1: https://youtu.be/zAvjlOYR_Bw?t=167