09.01.2015 Views

1 - HKU Libraries

1 - HKU Libraries

1 - HKU Libraries

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

T.P.D.M.V.2.3<br />

(Al/2001)<br />

3.7.3.6 In rural areas in the New Territories, and in some urban areas, conditions sometimes exist<br />

where the criteria mentioned in paragraph 3.7.3.5 could not be obtained, because of the low<br />

level of pedestrian use. However for safety reasons an uncontrolled cautionary crossing<br />

would not he appropriate and therefore in these locations the criteria given in Table 3.7.3.1<br />

may be used. Care however should be exercised in the use of the table, and it should be<br />

established that there is a genuine need for a zebra crossing. Proliferation of zebra crossings<br />

particularly where pedestrian flows are light may lead to a debasement of the value of the<br />

crossing generally. The possible accident effect as mentioned in paragraph 3.7.3.7 should<br />

also be taken into account.<br />

Table 3.7.3.1<br />

Criteria for Zebra Crossings in Rural Areas<br />

Peak hour vehicular volume<br />

Without With Peak Hour<br />

XT * - T Pedestrian Pedestrian Pedestrian<br />

Number of Lanes _ - _ ~ ., t<br />

Refuge Refuge Volume<br />

2 lanes 1000 — 70<br />

3 lanes 600 — 70<br />

4 or more lanes 400 1000 70<br />

3.7.3.7 Accident statistics may also be taken into account when considering the introduction of a<br />

zebra crossing or the change of a zebra crossing to another form of crossing. If detailed<br />

analysis of the accident pattern indicates that inadequate pedestrian crossing, facilities is one<br />

of the contributory factors of the accidents, then these may be used to justify the need for a<br />

crossing, or a change of crossing type even though the conditions in paragraph 3.7.3.5 may<br />

not be entirely satisfied. However, research findings in 'The Overall Effect on Accidents at<br />

Sites where Zebra Crossings were Installed 5 of theTJ.K. have indicated that, "the installation<br />

of a zebra crossing can achieve a significant reductions in accidents only if the accident rate,<br />

prior to installation, is at or above the average. In fact there is a danger that the installation<br />

will have a serious effect, particularly on pedestrians, if there is no definable problem before<br />

the crossing is installed." Territory conditions are not always the same as those in the U.K.<br />

but it would seem worth taking these findings into consideration when deciding the merits or<br />

otherwise of installing a zebra crossing.<br />

3.7.3.8 Where vehicular flows averaged over the 6 hours exceed 1000 v.p.h., other forms of<br />

crossings i.e. light controlled or grade separated may be more appropriate particularly in<br />

terms of safety and causing less disruption.<br />

3.7.3.9 For existing zebra crossings where peak hour flows are equal to or exceed 1700 v.p.h.<br />

consideration should be given to changing the crossing to a light controlled one, or where<br />

appropriate to a grade separated crossing.<br />

3.7.3.10 Appropriate widths for zebra crossings are indicated in Table 3.7.2.1.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!