Waterfall launches new road interchange index

Posted On Tuesday, 31 October 2017 10:13 Published by
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This morning saw the official launch of Johannesburg’s first Road Interchange Index, which measures the performance of the City’s most popular business node off-ramps according to user mobility, roadway capacity and ease of access.

Road_Intercharge_Index

Allandale interchange topped this year’s ranking, making it Johannesburg’s best performing interchange.

Gauteng, the country’s economic hub, is notorious for its busy roads and congested highways. During peak travel times, the N1 / M1 between Pretoria and Johannesburg and the N3 towards Germiston are more often than not congested by high traffic volumes and equally frustrated commuters.

“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.”

In order to determine which one of Johannesburg’s business nodes is most strategically placed, Waterfall commissioned ARUP, a global design and engineering company, to conduct a technical evaluation of key interchangers in the city, 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.  

  • Interchange type and supporting road infrastructure: William Nicol and Allandale were the highest ranked in this 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: The travel distance from various business nodes within Johannesburg to each interchange was measured to calculate an average travelling distance. Rivonia topped this category with an average distance of with 13.2km. William Nicol and Allandale were tied second, both averaging 14.7km.
  • Coverage: Allandale’s central location in relation to Pretoria, Johannesburg and the East and West of Johannesburg, sets it well apart from other interchanges in the region. Allandale is in close proximity to all major highways and provides unparalleled ease-of-access to national logistics and transport routes.
  • Daily Traffic Volumes: 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 traveling southbound and over 70 000 vehicles traveling northbound per day. Its nearest competitor, Rivonia Road can only handle 60 000 in both directions.
  • Airport and terminal Access: 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 findings of the index once 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 government and local stakeholders to make Waterfall a world class integrated city,” concludes Pete Mackenzie, Head of Development at Attacq

Last modified on Tuesday, 31 October 2017 10:29

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