Increased traffic volume is expected during implementation of the Project. The presence of heavy and slow-moving vehicles may obstruct the movement of other vehicles plying the transportation route. One of the principal challenges in traffic control is accommodating traffic in a safe and efficient way. Efficiency can be viewed as a measure of movement levels relative to the objectives for a particular transportation system as well as the finances required for its operation.


Conduct traffic and transportation activities in a safe and efficient way

Standard Operating Procedures


12.1.1 Erect suitable speed limit and safety signs at the project entrance (i.e. development site, overburden dumping ground and borrow pit) to notify public road users.

Plate 34: Examples of speed limit and safety signs.

12.1.2 Strictly obey speed limits and other traffic laws.

12.1.3 Stabilise and pave all entrance/exit roads to the site for a suitable distance from where these access roads join existing paved or public roads.

12.1.4 Construct a wash bay / wash through with a silt trap of not less than 1m x 1m x 1.2m (depth) in size (based on Drawing design) at the location shown in the approved EIA/AEC. In addition, construct the washing facility with grating / rumble surface and silt trap.

Plate 35: Example of a wash bay.

Plate 36: Example of a washing facility with grating / rumble surface and silt trap (pointed).

Source: Guidelines on Land Disturbing Pollution Prevention and Mitigation Measures, 2017 (Appendix E), DOE

Figure 20: Typical design of a wash through (rural area).

Source: A Practical Guide for Environmental Protection & Enhancement Works, 2008 (p.96), JKR

Figure 21: Typical design of a wash through (urban area).

Source: A Practical Guide for Environmental Protection & Enhancement Works, 2008 (p.98), JKR

12.1.5 Conduct periodic maintenance on the silt trap. Prohibit disposal of sediment removed from the silt trap into drainage or watercourses.

12.1.6 Refer to requirements from the Local Authorities for transportation routes and/or JKR for access involving road reserves (application of wayleave).

12.1.7 Obtain consent from private landowners if access is required across their land.

12.1.8 Clean tyres and undercarriage of transportation vehicles at the wash bay / wash through before leaving the project site to avoid formation of bulky deposited dirt and earth on public road surfaces.

12.1.9 Remove sediment or mud tracked out on public roads at the end of the same work day by sweeping, shoveling or hosing.

12.1.10 Avoid off-site transportation activities during peak traffic hours as stated in the AEC/MD.


12.2.1 Install and use navigation lighting on vessels.

12.2.2 Install navigational lights and beacons at the marine working area.

12.2.3 Strictly adhere to the MTRA report as approved by JPDS in relation to vessels/boats/barges passage or marine activity.

12.2.4 Comply with navigation restrictions for all construction vessels that are enforced by relevant authorities.

12.2.5 Refer to JPDS regarding the navigation area and where the ship should be anchored.