Traffic Control Contractors

Signs - Traffic signs use words and symbols to inform road users. These are made with retroreflective materials that ensure maximum visibility at night. There are two types of signs, (1) traditional and (2) variable. Traditional signs are regulatory, warning, and guide signs, while variable or variable-message signs are electronic traffic control signs that can be used to convey different traffic messages.

High-level warnings - Also called "flag trees", these high-level warnings are placed high (not lower than eight feet) and are used in work zones in urban areas with high traffic density. This device features two or three square orange flags and often come with a flashing warning light.

Channelling devices - The most common channelling devices are traffic drums and cones. These are used to warn and guide drivers and pedestrians through a work zone. They can be placed between opposing traffic streams or between traffic and road construction zones.

Road surface markings - A type of traffic control device that is directly applied to road surfaces. It designates lanes and indicates stopping points at intersections to both guide and channel traffic. These markings may also be removable or permanent.

Rumble strips - These are roughened surfaces that make a loud rumbling sound and vibration when run over by a vehicle. They can be either embossed or recessed and placed across traffic lanes to alert drivers of nearby potentially hazardous sites.

Lights - These signals are especially helpful in alternatively assigning right-of-way to traffic at an intersection that is moving in conflicting directions. It has three colours, red, green and yellow. Vehicles facing the red light must stop while those facing the green light can proceed. Yellow light notifies drivers that a red light will follow; therefore, they must stop when it is safe to do so.