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T.P.D.M.V.2.3
(Al/2001)
3.7.2 At-Grade Crossings
3.7.2.1 At-Grade Crossing are of the following types:
(i)
(ii)
(iii)
(iv)
Zebra Crossings
Light Signal Controlled Crossings
Cautionary Crossing at signal junctions
Uncontrolled cautionary crossings
3.7.2.2 At all at-grade crossing points dropped kerbs in accordance with Diagram 3.7.2.1 should be
provided to assist the elderly and people with disabilities. The lowered kerbs should be
provided for the full width of the crossing, with the ramped kerbs being located outside this
width. Under no circumstances should a dropped kerb be continuous around a corner radius
as this could lead to vehicles running onto the footway when negotiating the corner, but see
also paragraph 3.7.4.10.
3.7.2.3 At-grade crossings should not generally be installed on Trunk Roads or Primary
Distributors, where pedestrians should be segregated from vehicular traffic. Across Primary
Distributors serving also as District Distributors consideration may be given to the use of
light signal controlled crossings but no other form of at-grade crossing should be used.
3.7.2.4 The width of at-grade crossings should generally not be less than 2.5m nor greater than 9m.
Normally the crossing width will vary between 4m and 6m, as widths less than this have
been found to be too narrow, and widths greater than this neither possible because of site
limitations nor desirable because of the effects on vehicle capacity. Width of 2.5m may be
appropriate for uncontrolled cautionary crossings.
3.7.2.5 It is important that the crossing width provided is not obstructed by street furniture and that
adequate sight lines for pedestrians are available.
3.7.2.6 Table 3.7.2.1 gives a guide to appropriate crossing widths in relation to expected flows, and
also serves as a first step in the calculation of pedestrian capacity at signal controlled
crossing which is explained in Section 3.7.4. It should however be stressed that pedestrian
volumes in excess of those indicated for a particular width have been recorded and therefore
the table should not be applied rigidly. Volumes in excess of 1200 pedestrians per metre
width per hour, will generally be difficult for any at-grade crossing to deal with
satisfactorily from both a pedestrian safety and vehicular flow aspect and improvements or
alternative means of crossing should be considered when flows are at or above that level.
3 7.2,7 Adequate reservoir space must be provided at the edge of the carriageway and on any central
refuge, for pedestrians waiting to cross.
3.7.2.8 The following factors should be considered when assessing whether a zebra crossing or a
light signal controlled crossing should be provided:
(i)
(ii)
(iii)
the surveyed pedestrian/vehicle flows conflict;
the current accident record; and
the benefits to pedestrians in terms of convenience, safety and reduced delay against
any additional delay incurred by vehicle occupants.