Average Vehicle Speed around Kohuwala Junction, Nugegoda

During the past few years, a number of flyovers were added to the National Road Network of Sri Lanka to reduce the traffic congestion on those specific areas. As another step of the flyover construction, the cabinet has approved to construct another three flyovers at Kohuwala, Gatambe and Heerassagala Junctions.

What is the actual effect of this huge investment to the National Road Network and economy? There are so many arguments supporting and against the flyover concept. Can we really improve the speed of the network with flyovers? We need speed data before and after the construction to give an answer in terms of speed.

With Google map, you can calculate the current travel time for the specific origin and destination across the given set of waypoints. The Google Map also provides APIs to get this information directly to your applications. Using these APIs we are collecting travel time data for a set of routes (given below) traverse through the Kohuwala Junction since 15th January 2019.

The traffic data are collected covering both morning and evening peaks. The morning data are collected from 6:30 AM to 8:30 AM at 15 minutes intervals. The evening data are collected from 4:30PM to 6:30 PM.

The following graphs were drawn using the average speed of the morning and evening periods. The graphs are set to update automatically as the data collected. If you need more detailed traffic data you can download the data sheets from the following links.

  1. Data Sheet 1: Speed data from 6:30 AM to 8:30 AM
  2. Data Sheet 2: Speed data from 4:30 PM to 6:30 PM

The average speed of vehicles approaching from Pepiliyana Junction

  • R101 – Pepiliyana Junction – Kohuwala – Pamankada (map)
  • R103 – Pepiliyana Junction – Kohuwala – Nugegoda Flyover (map)
  • R107 – Pepiliyana Junction – Kohuwala – Kalubowila Hospital (map)


Average speed of vehicles approaching from Nugegoda Flyover direction

  • R104 – Nugegoda Flyover – Kohuwala – Kalubowila Hospital (map)
  • R105 – Nugegoda Flyover – Kohuwala – Pepiliyana Junction (map)
  • R106 – Nugegoda Flyover – Kohuwala – Pamankada (map)

The average speed of vehicles approaching from Kalubowila Hospital direction

  • R102 – Kalubowila Hospital – Kohuwala – Nugegoda Flyover (map)
  • R108 – Kalubowila Hospital – Kohuwala – Pepiliyana Junction (map)
  • R109 – Kalubowila Hospital – Kohuwala – Pamankada (map)

The average speed of vehicles approaching from Pamankada direction

  • R110 – Pamankada – Kohuwala – Pepiliyana junction (map)
  • R111 – Pamankada – Kohuwala – Nugegoda Flyover (map)
  • R112 – Pamankada – Kohuwala – Kalubowila Hospital (map)

External Links

  1. Press briefing of Cabinet Decision taken on 2018-09-18  (Construction of flyovers in Kohuwala, Gatambe, and Heerassagala)
  2. Automate Google Sheet to get Google Map Travel Time and Distance

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