2019-018 - Laserfiche WebLink

Home Browse Search

Cam preihemsivu Alan Transportations Elea curt Overall, 1he tradel validalion process �rivcilved runnirig the f1SUBMS model to obtalin precicled 2010 rciadway traffic volumes aeric then ciamparirig those modell-predicled rciadway volumes to actuall 220-0-01 2010 fie ld-colleoled traffic aciunls. Hased Lipari the corripeirisciri oft prcidicted to observed volumes, minor Manges ware made to the model's parameters. This charige in parameilars allowed the rricidal to aplplraximate plredieted rciadwery volumes to aalua'I rciadway volumes. 'Ilhraugli this prone ss, an aacc pltab le proiciatc c-to-aetua l rated was cit ta' ine c . )Mitt this procass complelle, the model was then.aonsidercc valid for iIhe purpose ofl predicting fUtdra traffic levels using future -year sociacconomic data projections. Ne eds A nalysis The validated model was lhen ruri using 2#34-2040 socioeaonornia data and the cidsling and commitlled road rietwork. 'phis modell ruin was performed to develop -2C4( traffia demand proieations under the assumplion that rice capacity -producing rciadway improvements wauld to mace from -20X1 to 2.0302G40. In Of er words, this modell rum asst ssed the impact of 20 years ciflgrowth on the existing and committed roadway network. TN its mode 11 run alsa idaritified roadway deficiencias resullting flrom the grciwf in travel demand ovar this 20 -year time peracid. A cchaieml rciadway is defined as ariN rciadway having a level ciflscrvicc condiflon ftit exceeds the aic cipted roadway perfbrmancc stalndard. With thus process, all defiiaic rit rciadways be aame carididates for poteritial fulure road widening proieats avid were tested to dctermiine whether irripraycrntrits were rieedcc to maintain the adapted levell ciflserviiice standards through the year 20-30204(l. In Terms ofla tput, the traffic model projecils future Naar traffic volumes on all major rooks in the count)l. For each rciadway on iIhe nctAcirk, 1he mccel uses the projecteid traffic 'Yalume (J"v") for the road (produced by the modc 1) arse elf u maximum aceeptat le capaiait)l ("a"; of the road to trarisformi east cifl these raw yalumc prajeetions inla more Uriccirslandablle volume to ac(ieptatle caplacAN 11"v/c") ratio. lflthe v/c rartici exceeds 1.0, the traffic volume of a roadway segmient is projected to exceed the aeceptalbk ciapacity ofl that rciadwery segmcrit. While a v/e cfl 1.0. indicates ilhat iIhe traffic volume is _lust at the acceptable level of service, a roadway with a vla. much Tess thari 1.0 fas exaess traffic aapaciiiN. In the latter case, more traffic could be aacomrricidated, ane the rock would silill funclion at an adequate leve] oflserviee. Coir it unity Dave lopment Departs c nt Indian River County 78 A PHEN DIX A — Tlranspcirl ail i on A me ndmeml s