COMPLEX STACK TYPE SIGN DESIGN
4.10 The design of diagram 2005 is shown in figure 4-9 and is in the form of a working drawing.
4.11 The sign comprises two sections as described in para 2.19. These are the junction name at the top and the directional information given below. The general rule, as set out in para 2.19, is that a divider separating different elements of the sign will have the same width as the sign border (usually 1.5 sw). However, on a stack type directional sign all routes indicated are considered to be one sign element. Therefore the dividers between the different routes have a reduced width of 1 sw. The junction name is a different element and therefore has a divider 1.5 sw wide. The corner radii are equal to the width of the divider to which they relate (as shown in figure 4-9). Design of the junction name panel is described in paras 3.39 to 3.41.
4.12 The general order in which directions are indicated is as follows:-
(a) Ahead destination with vertical arrow on left hand side of destination block.
(b) Destinations to the left with the arrow to the left of the destination block. Where more than one left turn is shown the order from top to bottom is anti-clockwise.
(c) Destinations to the right with the arrow to the right of the destination block. Where more than one right turn is shown the order from top to bottom is clockwise.
4.13 In some cases the order in which the various directions are shown, as set out in para 4.12, may be varied to produce a more balanced sign layout. For example a two-panel sign might have one arrow pointing downwards at 45° to the left and the other arrow pointing upwards at 45° to the right. Showing the right turn above the left turn would, in this case, improve the appearance of the sign, as shown in figure 4-10.
4.14 For the design of diagram 2005 illustrated in figure 4-9 the points to consider are:-
(a) "Biggleswick" and “Lampton” are two different blocks, being associated with different route numbers. As the “M11” patch is directly below the "A11" tiles, the appropriate block spacing of 2.5 sw is chosen (see para 3.25) and this is measured to the outside border of the patch. The “M11” patch rather than the tiled legend “Lampton” determines the space to the lower panel divider. The arrow is centred vertically on the sign panel.
(b) The width of the sign is determined by the left turn destination. The ahead destinations are ranged left and positioned on the left hand side of the sign panel so that the vertical arrow is 2.5sw from the left hand border. The right turn destinations are ranged left and positioned on the right hand side of the sign panel so that the horizontal arrow is 2.5 sw from the right hand border.
4.15 Figure 4-11 illustrates the design of the sign shown in diagram 2103. The additional design features to consider are:-
(a) Where distances are shown in a list of destinations they are centred above each other. The minimum horizontal space between any place name (or route number) and a distance on either the same line, the line immediately above or the line immediately below is 7sw. As the ”(A1(M))” patch is in this case a destination rather than a route number (i.e. it has no associated place name), a distance may be shown on the same line. Where a destination includes a place name, a route number and a distance, the route number must be shown on a separate line, e.g. "Millington Green (A4011)".
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