W 103 Start of Climbing Lane 11 Nov 2014 Category: Warning Signs Description Description W 103 Start of Climbing Lane The W 103 Start of Climbing Lane sign should be provided at the start of a climbing lane on a single carriageway road. Click to rate this post! [Total: 0 Average: 0] Related products W 002R Side Road Right W 003L T-Junction (Type 1) – Left W 014 Crossroads on Dual C’way W 004L T-Junction (Type 2) – Left