Traffic management plan when reconstructing an existing


Assume  you are  a consultant firm and have been hired to come up with atraffic management planwhen recconstructing ngong road write  afull report for the reconstruction.





REG NO: EN251-3428/2013








Traffic Management during Construction Work of Ngong Road



Managing traffic is essential to providing a safe construction workplace. Traffic can include cars, utilities, delivery trucks,forklifts,excavators and pedestrians such as workers and visitors.

Vehicles includingpowered mobile plant moving in and around workplaces, reversing, loading and unloading are activities frequently linked with workplace injuries and fatalities.

The safest way to protect pedestrians is to eliminate the hazard, which means removing the use of all vehicles including powered mobile plant or removing all pedestrians from traffic areas. This could be achieved by designing the layout of the workplace to eliminate the interaction of pedestrians and vehicles.

Where this is not reasonably practicable, the risks must be minimised so far as is reasonably practicable. This can be achieved by careful planningand by controlling vehicle operations and pedestrian movements at the workplace.This includes loading/unloading activities.

The key issues to consider for managing traffic at a construction workplaceinclude:

  • keeping pedestrians and vehicles apart, including on site and when vehicles enter and exit the workplace
  • minimising vehicle movements
  • the risks of vehicles reversing
  • visibility of vehicles and pedestrians
  • traffic signs
  • Developing a traffic management plan.



Information, instruction and training

All workersneed to know and understand the traffic rules,site safety policies and procedures for the workplace. Instructions should be provided to visitors before their visit, if possible.

Other persons at the workplace, so far as they’re able, must comply with any reasonable instruction that is given by the KENHA. They must also take reasonable care for their own health and safety and that they do not adversely affect the health and safety of others.

Keeping pedestrians and vehicles apart

The following actions will help keep pedestrians and vehicles apart both on site and when vehicles enter or exit the workplace:

  • provide separate traffic routes for pedestrians and vehicles
  • secure the areas where vehicles and powered mobile plant are being used, for example pedestrian barriers or traffic control barricades
  • provide separate clearly marked pedestrian walkways that take a direct route where possible
  • where walkways cross roadways, provide a clearly signed and lit crossing point where drivers and pedestrians can see each other clearly

Minimising vehicle movements

Good planning can help to minimise vehicle movement around a workplace.

To limit the number of vehicles at a workplace:

  • provide vehicle parking for workers and visitors away from the work area
  • control entry to the work area
  • plan storage areas so that delivery vehicles do not have to cross the site.

Where multiple items of powered mobile plant are being operated around the workplace, a  personwith the necessary training or qualifications should direct the plant:

  • ensure workers and other people are familiar with reversing areas and reversing areas are clearly marked
  • Ensureoperational plant movements are alerted to workers including swing radius, articulation points and overhead load movement.

Visibilityof vehicles and pedestrians

The WHS laws require that if there is a possibility of powered mobile plant colliding with pedestrians or other powered mobile plant, with management or control of the plant must ensure that it has a warning device that will warn persons who may be at risk from the movement of the plant.

The following measures should be considered:



Prominently display clear warning signs in relevant, well lit areas to remind persons of the traffic management hazards and requirements. Excavations should be clearly signed.

Traffic routes should be clearly sign posted to indicate restricted parking, visitor parking, Diversion, headroom, speed limits, vehicle movement, key site areas and other route hazards.Standard road signs should be used where possible and speed limits should be implemented and enforced.


Traffic management plans

A traffic management plan can help manage risks and communicate information regarding control measures. It may include details of:

  • the designated travel paths for vehicles including entry and exit points, haul routes for debris or plant/materials, or traffic crossing another stream of traffic
  • pedestrian and traffic routing
  • traffic controls for each expected interaction, including illustrations of the layout of barriers, walkways, signs and general arrangements to warn and guide traffic around, past, or through the workplace or temporary hazard
  • requirements for special vehicles (e.g. over-dimensional)
  • requirements for loading from side of road onto the site
  • travel paths on routes remote from the workplace such as places to turn around, dump material, access ramps and side roads
  • designated delivery and loading/unloading areas
  • the expected frequency of interaction of vehicles and pedestrians
  • roles and responsibilities of persons in the workplace for traffic management
  • Instructions or procedures associated with the control of traffic, including in an

The traffic management plan should be regularly monitored and reviewed to ensure it is effective and to take into account any changes at the workplace.

All workers should be familiar with the traffic management plan and receive sufficient information, instruction, training, and supervision.




The Traffic Management Plan for the reconstruction phases of the approved Ngong road development is set down through the following sections:

  1. site location and road network;
  2. approved development;
  3. overall principles for traffic management;
  4. hours of work;
  5. truck routes;
  6. traffic and parking effects;
  7. pedestrians;
  8. consultation;
  9. pedestrian and traffic management plan;

Site Location and Road Network

Ngong road is located between Kenyatta hospital and Adams arcade. It provides a four lane carriageway with two traffic lanes in each direction. Major intersections are signalized with additional lanes for turning traffic. Clearways operate in peak periods. Bus stops are

Provided on both sides of the road. There is a short term parking area on Ngong road

For set down and pick up adjacent to the site.


The table below describes various routes that are commonly used to Ngong through Ngong need

Bus Routes
Route Destination Route Description
4W Riruta Satellite Kenyatta Ave, Community, Kenyatta Hospital, Ngong Rd, Adams Arcade, Woodley, Jamhuri, Dagoretti Corner, Riruta Satellite
5 Jamhuri Estate Kenyatta Ave, Serena, Community, Kenyatta Hospital, Ngong Rd, Adams Arcade, Woodley, Jamhuri Estate
7C Kenyatta National Hospital Kenyatta Ave, Serena, Community, Upper Hill, Kenyatta National Hospital
8 Kibera (via Ngong Rd) Kenyatta Avenue, Serena, Community, Kenyatta Hospital, Ngong Rd, MugoKibiru Rd, Kibera Drive, KiberaAyany Estate
24 Karen Haile Selassie Avenue, Ngong Rd, Adams Arcade, Woodley, Jamhuri, Dagoretti Corner, Karen, Hardy
32 Kibera (via ArgwingsKodhek Rd) Kenyatta Avenue, Serena, Panafric, Valley Road, ArgwingsKodhek Road, Hurligham, Kilimani, Yaya Centre, Ring Road Kilimani, Adams Arcade, Kibera Drive, KiberaAyany Estate
40 Ngumo Estate Kenyatta Avenue, Serena, Community, Ngong Road, Kenyatta Hospital, Mbagathi Road, Kenyatta Market, Ngummo Estate
46 Kawangware Kenyatta Avenue, Serena, Panafric, Valley Road, ArgwingsKodhek Road, Hurlingham, Kilimani, Yaya Centre, Korosho Road, Gitanga Road, Kawangware


Overall Principles for Traffic Management

The beneficiary of this Construction Traffic Management Plan will comply with

Any other conditions imposed by the City’s Construction Regulations Unit.

The overall principles for traffic management during demolition, excavation and

Construction phases of the development are:

  1. provide a convenient and appropriate environment for pedestrians;
  2. minimise effects on pedestrian movements and amenity;
  3. manage and control vehicular movements to and from the site;
  4. maintain traffic capacity at intersections and mid-block in the vicinity of the site;
  5. maintain existing on-street parking in the vicinity of the site where practical;
  6. maintain access to other properties adjacent to the site;
  7. restrict vehicle activity to designated truck routes through the area;
  8. maintain safety for workers;
  9. provide appropriate access to the site for demolition, excavation and
  10. construction traffic;
  11. Manage and control vehicle activity in the vicinity of the site.

Hours of Work

In accordance with the set traffic management rules, work associated with demolition, excavation and construction for the development will be carried out between the following


  1. Monday to Friday: 7:30 am to 5:30 pm;
  2. Saturday: 7:30 am to 3:30 pm; and
  3. Sunday/Public Holidays: no work.

Any works outside these times would be subject to a separate application to the

City of Nairobi. The control of hours of operation avoids truck movements during

The early hours of the morning, before 7:30 am and in the evening, after 5:30 pm.

Truck Routes and Access

It is proposed that trucks travel to and from the site along the followingdesignated construction routes. This is during the demolition, excavation andConstruction stages:

.Approach Routes

  1. Kenyatta hospital
  2. Adams arcade
  3. Ndagoretti corner
  4. Kimbera


During construction of the development, trucks bringing material to the site willbe accommodated on site .The designated truck routes to and from the site are proposed to restrict trucktraffic, as far as possible to the main road network through the area. Theapproach and departure routes of construction vehicles to and from the site areconsidered appropriate.All demolition, excavation and construction phase traffic will enter and leave thesite from and to Ngong Road except for vehicles required for works alongother Street frontage where access cannot be reasonably obtained fromNgong Road. In this instance access may be obtained from the other route past Ngong road.

Ngong Road including piling rigs, excavators and the like. The beneficiary ofthe construction traffic management plan will comply with any other conditionsImposed by the City of Nairobi Construction Regulation Unit. Excavation ordemolition spoil removal is not an exception.

During demolition and excavation, trucks transporting material from the site will be accommodated on site. Theapproach and departure routes of construction vehicles to and from the site areconsidered appropriate.


Traffic and Parking Effects

During the demolition and excavation period, there will be a total of some 15 to

20 trucks per day taking demolition and excavated material from the site. During construction of the development from Ngong Road, peak activity wouldoccur during Bitumen placement/pour. During larger pours, some 15 to 20 tarmac trucksper day would be required. For smaller pours, some 10-20 concrete trucks wouldbe required. At other times, deliveries of construction materials to the site wouldbe lower at some 10 to 20 trucks per day.




A construction committee will be established. Meetings of the committee will be held monthly or at other appropriate intervals to discuss construction matters. Local residents and other relevant parties will continue to be informed of these meetings and other construction issues by email notification and letter box drops. For matters relating to the construction process, local residents will be able to contact the appointed contractor or project manager by telephone or email. A dedicated telephone number has been established by the project managers

Which will be transferred to the contractor once it has been appointed.


Pedestrian and Traffic Management


Signage, fencing, overhead protection, safety barriers and line marking details, as required, will be provided in accordance with British Standards and theRoads and Traffic Authority’s Manual for Traffic Control at Work Sites. A copy ofthe Construction Traffic Management Plan will be kept on-site at all times. Signage details, the control of pedestrians in the vicinity of the site, and thecontrol of trucks to and from the site will be the responsibility of the siteContractor. The pedestrian and traffic management plan for the demolition and excavationIncludes the following:

  1. demolition and excavation activity to be provided for on-site;
  2. demolition and excavation vehicle access to the site will be provided from
  3. the movement of trucks on and off the site to be managed and controlled by

Appropriately qualified site personnel in accordance with a Safe Work Method

Statement and Traffic Control Plans;truck movements to and from the site to be restricted to designated truckroutes shown on the attached.

  1. The management of the site works will be the responsibility of the site i.e. watering to ensure no dust during the reconstruction.
  2. pedestrian arrangements, construction activity and erection of safety fencing will be provided in accordance with Workover requirements; andconstruction signage to be provided in Ngong Road and other Street in accordance with the Roads and Traffic Authority’s

Manual for Traffic Control at Work Sites.

The pedestrian and traffic management plan for the demolition, excavation and

Construction phases of the development is considered appropriate to provide for

Traffic and pedestrian activity. It may be updated when more is known about the

Construction Phase.

The works zone will be required during the construction

Period, and will extend along the site frontage (approximately 50 meters). Works zone

Time restrictions will be in accordance with the approved hours of operation. The City of

Nairobi traffic committee has raised no objection to a possible future works zone directly

In Ngong Road.




The road shall thus be constructed in sections and the traffic will be diverted at different sections of the road. The works will start by first expanding the road way on its shoulders and later joining the left-hand side and the right hand side after all works have been completed this is by working on the road reserves so as to avoid interrupting the existing traffic. Since Ngong road is a high traffic region thus it will be important during the reconstruction of the road to work on given sections at night so as to avoid inconveniencing many road users. This will be during the reconstruction period after all works on the reserve and road expansion are done to allow the road users use the new expanded route as the existing one  will be worked on.













Flood, K. U. (1975). Traffic management. Dubuque, IA: W.C. Brown Co.

Olivo, L. M., & Grime, J. (2007). Traffic management. Toronto: Emond Montgomery Publications.

Phaal, P. (1994). LAN traffic management. New York: Prentice Hall.

Traffic management. (1991). Newton, MA: Cahners Pub. Co.


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