The Star Early Edition

Al­lan­dale voted best in­ter­change in the city

Scored 43 out of a pos­si­ble 45 in first new road in­ter­change in­dex

- ANNA COX @an­na­cox Travel · Transportation · Industries · Vanuatu · Allandale

THE Al­lan­dale Road in­ter­change has been rated the best in the city, Rivo­nia Road in­ter­change the best for con­nec­tiv­ity and Wil­liam Ni­col Drive in­ter­change for sup­port­ing in­fra­struc­ture.

These were the find­ings of Joburg’s first new road in­ter­change in­dex, launched two weeks ago, which mea­sures the per­for­mance of the city’s most pop­u­lar busi­ness node off-ramps ac­cord­ing to user mo­bil­ity, road­way ca­pac­ity and ease of ac­cess.

These were the find­ings af­ter the new sub­ur­ban mixed-use node of Wa­ter­fall in the Midrand area com­mis­sioned Arup, a global de­sign and en­gi­neer­ing com­pany, to con­duct a tech­ni­cal eval­u­a­tion of key in­ter­changes in the city.

This was based on a rat­ing of 1 be­ing poor, and 5 be­ing ex­cel­lent. The study as­sessed in­ter­change type and sup­port­ing road in­fra­struc­ture; cov­er­age; con­nec­tiv­ity (travel dis­tance from the var­i­ous busi­ness nodes); daily traf­fic vol­umes; ve­hi­cle speeds; and air­port and ter­mi­nal ac­cess.

Over­all, the N1/Al­lan­dale in­ter­change per­formed the best across all cri­te­ria con­sid­ered, scor­ing 43 points out of a pos­si­ble 45.

Wil­liam Ni­col and Al­lan­dale were the high­est ranked in the sup­port­ing road in­fra­struc­ture cat­e­gory.

Both ben­e­fit from well-de­vel­oped se­condary and ter­tiary road net­works that en­able eas­ier traf­fic flow and al­le­vi­ate pres­sure off main roads.

Al­lan­dale was also the only in­ter­change with­out traf­fic sig­nals, en­cour­ag­ing free flow traf­fic move­ments and quick ac­cess on and off high­ways

Con­nec­tiv­ity was an­other fac­tor con­sid­ered, mean­ing the travel dis­tance from var­i­ous busi­ness nodes within Joburg to each in­ter­change was mea­sured to cal­cu­late an av­er­age trav­el­ling dis­tance.

Rivo­nia topped this cat­e­gory with an av­er­age dis­tance of 13.2km.

Wil­liam Ni­col and Al­lan­dale were tied sec­ond, both av­er­ag­ing 14.7km

Al­lan­dale’s cen­tral lo­ca­tion in re­la­tion to Pre­to­ria, Joburg and the east and west of the city made it the best for cov­er­age. It is in close prox­im­ity to all ma­jor high­ways and pro­vides un­par­al­leled ease-of-ac­cess to na­tional lo­gis­tics and trans­port routes

With re­gard to daily traf­fic vol­umes, the Al­lan­dale in­ter­change was the only in­ter­change found to still have ex­tra ca­pac­ity to ac­com­mo­date more ve­hi­cles. At its peak, the Al­lan­dale in­ter­change han­dles al­most 80 000 ve­hi­cles trav­el­ling south­bound and over 70 000 ve­hi­cles trav­el­ling northbound a day.

Its near­est com­peti­tor, Rivo­nia Road, can han­dle only 60 000 in both di­rec­tions.

On av­er­age, the Al­lan­dale in­ter­change pro­vides the short­est dis­tance to near­est air­ports and rail ter­mi­nals, mak­ing it the most com­pet­i­tive in terms of lo­gis­ti­cal and travel con­sid­er­a­tions.

“The de­gree of ac­ces­si­bil­ity for any city is, to a large ex­tent, de­ter­mined by the ac­cess gained from high­way in­ter­changes,” said Si­mon van Jaarsveld, trans­porta­tion plan­ner at Arup.

“These road­ways pro­vide ac­cess and ex­po­sure to mil­lions of peo­ple ev­ery day and should be a key con­sid­er­a­tion when de­ter­min­ing where to lo­cate one’s busi­ness.”

Al­lan­dale was the only in­ter­change with­out traf­fic sig­nals

Pete Macken­zie, head of devel­op­ment at At­tacq, a prop­erty devel­op­ment com­pany, said the find­ings of the in­dex again reaf­firm Wa­ter­fall as the most strate­gi­cally-placed busi­ness node in the prov­ince.

“Wa­ter­fall recog­nises the im­por­tance of in­vest­ing in solid pub­lic trans­port in­fra­struc­ture and has funded the build­ing of well-planned, qual­ity road in­fra­struc­ture in the area to en­sure this.

“We are com­mit­ted to part­ner­ing with the gov­ern­ment and lo­cal stake­hold­ers to make Wa­ter­fall a world-class integrated city,” he said.

Wa­ter­fall, a grow­ing mixe­duse area in Midrand, is one of the lat­est growth nodes in the prov­ince.

 ?? PIC­TURE: STEVE L AWRENCE ?? RIGHT LANE: Al­lan­dale on and of­framps… high oc­cu­pancy on the N1 be­tween Rooi­huiskraal and St An­drews of­framps on the N1 be­tween Joburg and Pre­to­ria. The lanes came into use to get mo­torists to form lift clubs and al­le­vi­ate congestion.
PIC­TURE: STEVE L AWRENCE RIGHT LANE: Al­lan­dale on and of­framps… high oc­cu­pancy on the N1 be­tween Rooi­huiskraal and St An­drews of­framps on the N1 be­tween Joburg and Pre­to­ria. The lanes came into use to get mo­torists to form lift clubs and al­le­vi­ate congestion.

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