Wembley Sports Park Integrated Access, Traffic and Car Parking Plan
Wembley Sports Park Integrated Access, Traffic and Car Parking Plan
Wembley Sports Park Integrated Access, Traffic and Car Parking Plan
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AECOM<strong>Wembley</strong> <strong>Sports</strong> <strong>Park</strong> <strong>Integrated</strong> <strong>Access</strong>, <strong>Traffic</strong> <strong>and</strong> <strong>Car</strong> <strong>Park</strong>ing <strong>Plan</strong>34from that predicted. Various assumptions about future transport patterns <strong>and</strong> behaviours had to be made to carryout the traffic analysis. Assumptions are based on observed patterns <strong>and</strong> behaviours <strong>and</strong> the anticipatedchanges that will occur as a result of developing the site. <strong>Traffic</strong> forecasting does have limitations <strong>and</strong> forecasttraffic volumes should be taken as only indicative of the likely traffic that a particular site may generate or thevolumes that a road may carry.5.3 <strong>Park</strong>ing Dem<strong>and</strong>Figure 17 shows the forecast parking dem<strong>and</strong> against the parking dem<strong>and</strong> observed on 6 August 2011. As canbe seen the parking dem<strong>and</strong> profile, based on the assumptions outlined above, is a good representation of theobserved profile. The vertical differences are attributed to the additional activity forecast as a result of theupgrading <strong>and</strong> expansion of the sporting facilities. The forecast 85 th percentile dem<strong>and</strong> is 93 <strong>and</strong> 114 vehiclesmore than the existing dem<strong>and</strong> of 776 in Stage 1 <strong>and</strong> Stage 2 respectively.For netball events the level of car usage <strong>and</strong> linked trips was determined by comparing the observed dem<strong>and</strong>against the number <strong>and</strong> type of games known to be taking place during the times of the survey. The valuesdetermined for car usage <strong>and</strong> linked trips allow a model to be estimated that reflects the dem<strong>and</strong> for parking, butalso reflects the dwell time for cars in the car park, allowing the maximum dem<strong>and</strong> <strong>and</strong> peak dem<strong>and</strong> period to bedetermined. <strong>Car</strong> usage represents the number of car trips per competitor, for example if a car usage value of 80per cent is applied, for every 10 participants 8 car trips will be generated. Linked trips values represent thepercentage of these trips determined from the car usage estimate which are likely to remain on site beyond theend of any specific game. So for example based on a car usage estimate of 80 % <strong>and</strong> linked trips of 50 %, foreach 10 participants 8 vehicles will arrive prior to any given game time, 4 will depart after the game <strong>and</strong> a further 4will depart at some point later in the day.Comparison of observed parking dem<strong>and</strong> with the forecast parking dem<strong>and</strong> showed that levels of car usage <strong>and</strong>linked trips are not constant <strong>and</strong> vary between junior <strong>and</strong> senior games. Therefore values for car usage <strong>and</strong> linkedtrips were determined for each category of game <strong>and</strong> were found to be approximately 65% car usage <strong>and</strong> 40%linked trips for juniors, <strong>and</strong> 70% car usage <strong>and</strong> 30% linked trips for seniors.Figure 17Forecast <strong>Park</strong>ing Dem<strong>and</strong>1200100080060040020007:057:257:458:058:258:459:059:259:4510:0510:2510:4511:0511:2511:4512:0512:2512:4513:0513:2513:4514:0514:2514:4515:0515:2515:4516:0516:2516:4517:0517:2517:4518:0518:2518:45Surveyed (6 Aug 2011)Surveyed (85th Percentile)Forecast (Winter Sat) - Stage 1 Design (85th Percentile) - Stage 1Forecast (Winter Sat) - Stage 2 Design (85th Percentile) - Stage 2T:\60218676 - <strong>Wembley</strong> PK TA\8 Issued Docs\8.1 Reports\Comprehensive <strong>Integrated</strong> <strong>Access</strong> RevF.docxRevision F - 8 February 2012
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