Cape Town is the most congested city in South Africa for the second time in a row according to Dutch navigation equipment maker TomTom's traffic index released recently. The index shows that the mother city had an annual increase of 1% and you will need to add at least 40 minutes extra travel time during peak hours on highways.The city is ranked the 47th worst in the world while Johannesburg sits at number 77 out of 174 cities listed.In Cape Town‚ morning peak traffic is high during the week with Mondays being the worst day to travel in some suburbs.Afternoon peak traffic is the highest on Wednesday‚ Thursday and Friday and overall traffic in Cape Town showed a five percent increase from 2009.Just like Cape Town‚ morning peak traffic in Johannesburg is higher on Mondays and it’s at its highest in the afternoons on Wednesdays‚ Thursdays and Fridays.Traffic congestion in Johannesburg has seen a three percent decrease since 2009.Even though Pretoria has the least traffic among the three cities and has not been named on the list‚ it also has similar traffic trends with congestion at its highest on Monday mornings and Friday afternoons.Here is a breakdown of the most congested suburbs in the three cities.Cape Town:Worcester WestWoodstockSalt RiverVredehoekPlattekloof GlenMfuleniVelddriftMaitlandMooreesburgRawsonvilleJohannesburg: Sandton Bramley Yeoville Johannesburg CBD Bedfordview Ferndale Bryanston Buccleuch Woodmead RivoniaPretoria:WonderboomPretoria CBDBoardwalk VillasAnnlin ext 15..