3.3 Joining Main Roads and Highway Exit Rules

Joining Main Roads and Highway Exit Rules

High-speed highways, such as the E11 (Al Ittihad Road) and the E311 (Sheikh Mohammed bin Zayed Road), are the backbones of Sharjah’s transport network. Navigating these highways requires high concentration, precise speed control, and smooth lane transitions. Entering and exiting these high-speed environments are the most critical phases of highway driving, requiring strict adherence to safety protocols.

Joining Highways and Main Roads

Entering a highway involves transitioning from a low-speed slip road or ramp to a high-speed traffic flow. To merge safely without disrupting the traffic flow, drivers must use the designated acceleration lane correctly.

The Purpose of the Acceleration Lane

The acceleration lane is an extra lane parallel to the main highway designed specifically to give merging drivers space and time to increase their speed. The primary safety objective is to match the speed of the traffic already on the highway before attempting to merge. Merging at a lower speed is extremely dangerous, as it forces highway traffic to brake suddenly, creating a high risk of rear-end collisions.

The Merge Procedure (Step-by-Step)

Sharjah Driving Institute instructors teach a structured, six-step process for merging onto a highway:

1. Accelerate: As you enter the acceleration lane, press the accelerator firmly to build up speed. Your target speed should match the flow of traffic in the rightmost lane of the highway (typically 80–100 km/h depending on traffic).
2. Mirror Check: Check your rear-view and side mirrors to locate gaps in the highway traffic.
3. Signal Early: Activate your left indicator early to signal your intention to merge. This warns drivers on the highway that you are preparing to join.
4. Shoulder Check (Blind Spot): Perform a quick shoulder check over your left shoulder. The acceleration lane's angle often makes it difficult to see vehicles in the adjacent highway lane using mirrors alone.
5. Identify the Gap: Choose a safe gap in the traffic. If a driver on the highway slows down or moves over to the left to let you in, accept the gap.
6. Merge Smoothly: Steer gently into the rightmost lane of the highway. Once you have merged, cancel your indicator and adjust your speed to maintain a safe following distance (at least two seconds in dry conditions) from the vehicle ahead.

What to Avoid When Merging

• Never Stop in the Acceleration Lane: Stopping at the end of an acceleration lane is a critical error. Starting from a complete stop makes it nearly impossible to match highway speeds, creating a major hazard. The only exception is when traffic on the highway is completely gridlocked and there is physically no space to move forward.
• Do Not Force Your Way In: Highway traffic has the right-of-way. You must yield to vehicles on the highway and merge only when it is safe.
• Do Not Cross the Solid White Line: The acceleration lane is separated from the main highway by a solid white line at the beginning. You must only merge once the line becomes broken.

Exiting Highways and Main Roads

Exiting a highway requires transitioning from a high-speed environment to a lower-speed exit ramp or service road. Safe exiting depends on early planning and proper use of the deceleration lane.

The Danger of Late Decisions

Late decisions at highway exits are a primary cause of severe accidents on UAE highways. Drivers who realize too late that their exit is approaching often make sudden lane changes across multiple lanes, braking hard and cutting off other drivers.

• Plan Your Exit Early: Pay attention to green guide signs on Sharjah highways. These signs typically indicate exits 1 km and 500 meters in advance.
• Position Yourself Early: You must move into the rightmost lane (exit lane) at least 1 kilometer before the exit. If you miss your exit, never reverse, stop, or make a sudden lane change. Continue to the next exit and find an alternative route.

The Purpose of the Deceleration Lane

The deceleration lane is a dedicated lane adjacent to the highway designed to allow exiting vehicles to slow down. The golden rule is to maintain your highway speed until you have fully entered the deceleration lane, and then apply your brakes to reduce speed.

The Exit Procedure (Step-by-Step)

Follow these steps to exit a highway safely:

1. Signal Right Early: Activate your right indicator at least 100 meters (or at the first exit sign) before the start of the deceleration lane.
2. Enter the Deceleration Lane: Maintain your speed and steer smoothly into the deceleration lane as soon as the broken white line begins. Do not delay entering.
3. Decelerate Smoothly: Once your entire vehicle is within the deceleration lane, release the accelerator and apply the brakes smoothly. Reduce your speed to match the posted limit on the exit ramp (typically 40–60 km/h).
4. Check Your Speedometer: After driving at 120 km/h on the highway, 60 km/h will feel very slow, a phenomenon known as "velocitisation." Check your speedometer to ensure you have actually slowed down enough to navigate the exit curve safely.
5. Adjust to New Traffic Conditions: Exit ramps often lead to roundabouts, sharp bends, or intersections. Prepare to yield or stop as required.

What to Avoid When Exiting

• Never Brake on the Main Highway: Braking while still in the main highway lanes forces high-speed traffic behind you to brake suddenly. This is highly dangerous and can trigger a multi-vehicle pileup.
• Do Not Cut Across the Gore Area: The gore area is the triangular piece of land (often marked with white chevron paint) between the main highway and the exit ramp. Crossing the chevron markings is a serious traffic offence that carries a AED 500 fine and 4 black points in the UAE.