CINXE.COM

<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="390"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "publications.waset.org",cType: 'managed',cRay: '919aab344fe4a999',cH: '2f3mJa9xIqrY5Po2LVat4rDIbB7WS8.uWWZJNoiaQjo-1740853230-1.2.1.1-lE391p2rABHzt7.SgLBSXZNTbScjjwUA5k5r61gir8jHt6TW6_XtWAg5fhDmOIqc',cUPMDTk: "\/abstracts\/search?q=foot%20over%20bridge%20%28FOB%29&__cf_chl_tk=VFgt6aOg2ubYPxQLX8tF453r0mayeyfdMy3oqwJz2Tw-1740853230-1.0.1.1-emw1mbhJ4Vnuvp4bGq6MhGa2ykxVgfCAQADHHQ7Wu6k",cFPWv: 'b',cITimeS: '1740853230',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=foot%20over%20bridge%20%28FOB%29&__cf_chl_f_tk=VFgt6aOg2ubYPxQLX8tF453r0mayeyfdMy3oqwJz2Tw-1740853230-1.0.1.1-emw1mbhJ4Vnuvp4bGq6MhGa2ykxVgfCAQADHHQ7Wu6k",md: "9nvthluWsp.X4UkwHSoi0DtJBZv.XE4eAkGVUpkM6zQ-1740853230-1.2.1.1-YfF07G276l.QB7jSyG7p.WhtzuO.RRXqRiNwfYueIJ1yEjHAbzD8MZDHKBOA1v2OMVIg2NIA2uSu_SO8ej.NQ5i9v4zomScZBJyQ7INJfwujimeeNJw3PDMs.SIwi5h9EBiuY4y10PZxrZOcuG6eSL5Y54vEtw5KhQyYojapx_hsL1C1Fek1dxBERAXLeP_qwlFfmTikKnwSkBu6_aN94I5k7El9kJzEfnZbJjRi9GqHhMivyp0qiNF48N6rm1tos_nk2uFFWcGYDrIpGfOND5gTTl08dow6BoXZz7KiRJY0U2XFi5UdPkNUd6DT5AY3WnyIO2cgOCVAU7K2F0e8jTi5wV73sLuPlA4l8T5kjjUyjjLSYoSzmxMKCl1pt6kbQc3abch5ypFMhO.28xvNgIm0YylzRF4Y2xdnXUuXRRiFmdhxskIJtPXPQQMHUdrQfG5xQYg8BySq.3w0BQOrlHSELtWRsaI8ughBlCrvibduLua2cgts.oqAwTzsbO6uQ34gQGB0hwEvrTR68YVKCjIMhE6S4ID9goTztfbTOCgVwkq7ab5ydiwjmlW6SjcpbbRpNOHRvoVxYE_yT6rrilQStcP_JUQQrhCtxQ3MLNMHqNMeSVLrOQOGOyHXkbg7wi.3GZi6dlRyZLXo_Qw3.mwbWMmRK7vY_eee_ungl4YbJUGhGPmcMqTKaT8RmkzYHIVnYtxF74JLLxyjBCZjNAU9mu0s1yI0dRGAHd0Ize1aa1wgYW8sFw94UWKJ_tyoOBqrxazIYdcKqT_xUizsfksrIiYoxGfH2nKOKL0MprdbBrSoIbYnvltk6wUpi6CQ5EAGR.OhZx2sI0rgNYjU5ZZv07boZc39VKbcaZ5fM4SxFcQPGWlDHo8QZGsISXlzh3GzGC0ZEV0AqCU5Q9Dn2dEO7EKPY0sF4QryQL0FvHfi.LQGqETcnbvwGVm24zJMGf5lJm9ABxfm8TDbr.JGAeZr_37uJj4M3n1nvOEIeKBKJJJUhn0kD8.YwnFiJBVQV7kBtfAzygk3LVoJRBzkXi4kpGGi8.UqMRZgRYxrITul4LPq3MgGHu_tVfCTORDs5XVWHOOAH0e6HufZbGtGxto6LRAZXzqK71A4_im_7hcTluyZ6hPWh.nzJsSHug7IrHIz1lUesMTRvt.Hcoo01aLQRotKyrZjVXZfigFSPfxDTtZEkjnRv0qXB3798tfQFHgky5jtGkUacg3rEz0C3hte.mkJ3TrWHi7zmv6SDGbFBXVgDlXFaMXXB.8.m_a0h40fJVcThs5.vi1CLPy5Yby_GzPSgxpA4.Q1CKyiBhmq530ZtMUsvEs04zcsM3g1",mdrd: "wCmbOEN_OD_IInpbeARYTplRT.rAAH.hAc1_VXhJhpg-1740853230-1.2.1.1-HBV1BjFmMgX9dDfQNmJ4OVu30eWNXs7pDRZwM0H.luvXGFm8DyrCdvG76.h5pqt2ZmVIUCiNZ6KuHvtuQmvVQsT8TK8X6iZMPBILj73Rti2PNZlSQJwk.90AtFC5bXISB8SY_R4ddnZ7BPRiE5b2fBkzCuiMihfeuhUwBe1KrUpnowUaAhpBri0diMMPTxSGXrO8Kh1ifDg8BvTEEx2bajOK5H4hLIYoaqMWC9iXY0ci1fYARZEWjm4sQFyBSXj_gNLMqeLS0qg.LPO1T3uKTZs_7oaAQMIPSPedaTYOlUP7c4p5bWltPhPfOa1_tGl4jVeRnDbnDlOVCJx4wSIB84eLmsJodOcClWMaBGV2BP1wG_xzmkt_YjS.RDRrvVVldGGSrWxTAKMGh8AXpcMjOSdhAJo4l9J3Eub6fORWSojfxq9umFgthLJMt58HsKRptyHNpjHc1dGeuiQZIXBNQq8_SEmOCTYwqhIt3.jI0JH0Yj1NFtzDpduCNxD3raBVlTFwRHbCw4PVhCCTW6YvyfQjV0isqb8NzQuHLKTBe.Q1P8rINE8jvHURc6e8Z9XqFCKLjDpZQz24WPPwvvHaYdzZfjboKCXbHvE9gYw4.MOs6fTtrrqG1upRbAO0aUvUZtdA1I1vGZsD1UULeeJf4M98sp2X5PFLqyZuithd_7DR_EPoyaan9AEFQ._eCKf7zUctEqoOSALtnXEHdmeQsLCFR9GEEB7bMezLeDRpfRo4G44.6DbOXMRQ_BToZR9QU3KPHzCMvs2E1DFMhJvpHw3SocGE9O3Wc7SZK2nclCa0y7qzFwyeu4Pj5BpX.TiPrygAeXPhhSwU_UIZyNRLM3N8hLssPdWsUiGaVIjJDrjqgUw1ePPeOvEWG0Mh5JcKOAF1XP4H7o9__lntFts_44WL9Z19aYBfkY2HnCcG.srm2wqQhOLBGMt1lL4u7CNmmXq7Sf7xjTaLsQ8RpC_07bBWnVRzsLGRcrSubrnw6i8H39padz8eMQ_DbzZ.0c8wzNW5L_ft_R0XGxQlaH_fuX_uuOvA4RsclFQVm.cHjuhM.kJmDU2otc9zNtw485DlowQu5DK.r7_xMbklt_Nftjt_TczGXqgV82hO8tRgFu3VGDwERUplquSO3ychMQungKphkv1tGyZH243dqhcT7Szf435Tley57Q98.qvTLWyrwUo80LRgkR8dBFNTMXESrxNDVafWaoJ7DWA7PIvtVKkPAS_phDUx5XItWcMt3U8ypPueQzkwMvZXKv_zyrUM1mZuspGcVVc_ikdZhzPo.vSc7oPZ8f1xjJ1sN7evr_SGV.lsvZ99NJS0mMEb4iT4WUv5B6Ao1Ze8RzdTmeKIYLOVyj4nGhiYqVrEudUqKMEwVigd946xaebgYykyTFlfi9W_OF_oCKqG0zXs88CKCJaG9oyvtfDFv8dgyRnujiUoPXuduyl25SazeYbFBHXgl8lGQXy5VGWxPTKhSz2FkpS3l22ZLxVFxNbajQF9LAwfu7jxYZ4YW9ctqBNLJm_co9Pf37zZFv8Lg5Kg51q8TQm.IFCGW4OGciU3GXJJ5k_qO8TrcUNcQEL1UbFuZo4FgM8gj11hssdgky5p.EcEznPaguhC_R.D8fwJzSdl.kXryoSVlmA.VVIa.6zml3CRume48j3.Rpan6mPwwFRTOY1JYsfDMtuQIzz_DOVchaPr3Ugk5TWOWVUGoRXHU1M1dzpRYmYw5PboAlm3XxkY9wn_uDR0zTYSYi8sGX_w902q90gjd8exKnh6smUemNu_SiF9BfCb5097uzrrMWvA3V7bvqDEAgNZ6uhUiNgNjgC4S1Y81l7LCXIAtYolctiIbeHC5Rn_D9kWMXrs0n6PeFoRvq_n6TgSfUZa6ebxduwQReZfC911XPisSP7AVLoxykNS6HyB3ij.aXCeEyUohizObXwcn2Xp8VBVzvv3tnjUJMwXuSaqooEz9WI5BSdW"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=919aab344fe4a999';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/abstracts\/search?q=foot%20over%20bridge%20%28FOB%29&__cf_chl_rt_tk=VFgt6aOg2ubYPxQLX8tF453r0mayeyfdMy3oqwJz2Tw-1740853230-1.0.1.1-emw1mbhJ4Vnuvp4bGq6MhGa2ykxVgfCAQADHHQ7Wu6k" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>