The index covered six cities in South Africa over 2013, the Mother City’s congestion level was 27 percent, up from 25 percent last year.
Johannesburg was in second place, with 25 percent compared to 24 percent last year.
The percentage relates to the amount of increased travel time in heavy traffic, when compared to free flowing traffic.
East London was third with 22 percent, against 20 percent last year.
Pretoria (also 22 percent), Durban (18 percent), and Bloemfontein (12 percent) rounded out the rankings, with South Africa’s overall congestion being 21 percent.
Congestion in these three cities also rose compared to last year.
The highest morning peak was Cape Town, at 71 percent, followed by Johannesburg (60 percent), Pretoria (50 percent), East London (47 percent), Durban (42 percent), and Bloemfontein (24 percent).
Evening peaks were led by Cape Town (58 percent), followed by Johannesburg (55 percent), East London (47 percent), Pretoria (43 percent), Durban (40 percent), and Bloemfontein (22 percent).
Peaks were the busiest one hour period in the morning and evening in each city.
Looking at highway congestion among the six, Cape Town came first with 20 percent, Johannesburg second with 15 percent, followed by East London (11 percent) and Durban (11 percent), Pretoria (nine percent), and Bloemfontein (seven percent).
Non-highways were more congested than highways, with both Johannesburg and Cape Town scoring 30 percent, Pretoria 27 percent, Durban 26 percent, East London 25 percent, and Bloemfontein 16 percent.
The busiest day for morning peak period, evening peak period, and the delay per hour driven in peak period in each city were as follows:
- Cape Town: Monday, Thursday, 38 minutes;
- Johannesburg: Monday, 34 minutes;
- East London: Monday, Tuesday, 28 minutes;
- Pretoria: Monday, Friday, 27 minutes;
- Durban: Monday, Friday, 24 minutes; and
- Bloemfontein: Tuesday, 13 minutes.
The most congested day of traffic in each city last year, and the accumulated delay per year with a 30 minute commute were:
- Cape Town: Friday, March 8 and 89 hours;
- Johannesburg: Friday, November 29, and 83 hours;
- East London: Friday, May 31, and 73 hours;
- Pretoria: Monday, February 11, and 71 hours;
- Durban: Tuesday, March 26, and 65 hours; and
- Bloemfontein: Friday, January 18 and 40 hours;
The top five most congested cities in the world were Moscow, with 74 percent, followed by Istanbul (62 percent), Rio de Janeiro (55 percent), Mexico City (54 percent), and Sau Paulo (46 percent).