13.23 The bifurcation arrow in diagram 7233 is used to indicate that an additional lane has become available. In this case traffic wishing to leave the motorway is directed onto the hard shoulder. This bifurcation arrow is detailed in figure 13-12 and maybe used with any other centre panel design (including contra-flow signs) where appropriate. Where traffic is not directed onto the hard shoulder, the design excluding the hard shoulder line is used.
13.24 The bifurcation arrow shown in diagram 7232 is used where traffic on the hard shoulder rejoins the main carriageway and an additional traffic lane is available. The design of this arrow depends on the number of lanes and on whether the sign has a top panel (REJOIN MAIN CARRIAGEWAY). Figure 13-13 shows the basic design of the bifurcation arrow when there is no top panel (i.e. the width of the sign is determined by the number of lanes indicated). The
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