Traffic Engineering

Traffic engineering refers to the use of engineering techniques to achieve safe and efficient movement of goods and people. Traffic engineering encompasses traffic impact studies, traffic calming and road closures, access management, parking studies and traffic signals.


A traffic impact study is one of the Traffic Engineering services offered by Koleko Solutions. A traffic impact study is a study which assesses the effect that a particular development has on the transportation network. A traffic impact study is generally required by roads authorities to evaluate the impact of a change in land use. These studies are a part of the mandatory process to be followed by an applicant to obtain new land use rights. A traffic impact study varies in complexity depending on the size of the development, the current and proposed land use and the location of the development. Various traffic engineering concepts and principles are applied while conducting a traffic impact assessment. We have conducted traffic impact study for various developments comprising of residential, business, retail, industrial and offices. We have also conducted studies for filling stations, mixed use developments and also transit oriented developments.

There are several steps within a Traffic Impact Study, including trip generation, trip distribution, mode choice and assignment, which are then followed by capacity analyses and the identification of possible road upgrades. Specific assistance is given to identify road upgrades, to ensure that a realistic first order road upgrade costing is provided which takes into account physical site limitations that might have an impact on the final road upgrades to be recommended. In the process, Koleko ensures that the applicant gets the value for money. Read more about traffic impact study.

In South Africa, road closures are often pursued by neighbourhood / home owners’ associations in order to reduce crime. The home owners associations also approach us to reduce cut through traffic through their residential area and to help reduce speed on residential streets. Traffic calming includes physical design and measures that are put in place with the intention of reducing or slowing motor vehicles thereby improving safety of pedestrians and cyclists, especially in residential neighbourhoods.

Several important aspects need to be taken into consideration, such as the need for community involvement, the relevant road hierarchy, horizontal and/or vertical deviations required to achieve traffic calming objectives, pedestrian accessibility, existing public transport, schedule and routes of garbage trucks, and the role that decision makers play in the traffic calming process. Traffic engineering principles are applied in order to improve the safety and efficiency of the transportation system.



Access management refers to the control and regulation of accesses to intersections, interchanges, driveways and median openings. The primary objective is to enable access to the properties while maintaining road safety and protecting mobility by controlling the location, spacing, design and operation.

Some of the principles of access management are to limit direct access to major arterial roads, favour through movement of traffic along corridors and reduce the number of conflict points.

Koleko Solutions offers several parking related services. For private developers, there are several types of parking studies that can be conducted. This includes determining the demand for parking and understanding the utilization of an existing parking garage or facility. In addition, the duration vehicles are parked, the turnover of vehicles and the accumulation of vehicles in the parking lot can be determined. Koleko’s services also include developing a conceptual design of parking lots or garages and motivating parking relaxation in mixed use developments.

Our parking services to municipalities typically include developing parking strategies to manage demand (Travel Demand Management) or developing a parking policy. In addition, implementation of parking guidance signs and improving way finding are also services provided.




Traffic signal design and optimisation is one of the services offered within Traffic Engineering. Traffic signal projects typically include the design, planning and operations of traffic signals. Many of these projects include the analysis of current and future traffic through the intersection to determine the most optimum signal setting to improve mobility. Queue lengths, delay, green time, pedestrian crossing time, saturation rate, volume/ saturation, progression, green-bands and other traffic engineering concepts are applied during the analysis process. Traffic signals along a corridor or an arterial can be coordinate to promote progression in the peak direction.

The traffic signals can also be designed to accommodate bus priority (bus lanes or Bus Rapid Transit –BRT) and also cycle lanes. While designing traffic signals, special care is taken to accommodate pedestrians at intersections, especially the physically challenged, elderly and children.