Dubai’s Roads and Transport Authority (RTA) said in a 30 September 2026 announcement that it had completed a traffic expansion in Al Mizhar 4, running from Tunis Street towards Amman Street. The work covers a stretch of more than one kilometre and adds a third lane to the two that were already there. RTA reported that the added lane increased capacity by 50% and reduced journey time by 25%. The authority did not publish the measurement period, calculation method or before-and-after traffic counts, so these percentages are attributed to its project announcement.

The intervention is aimed at motorists travelling from Tunis Street towards Amman Street and at access to nearby residential communities. RTA said residents of Al Mizhar, Muhaisnah and neighbouring areas are expected to benefit from smoother traffic and easier connections. The announcement does not claim that the work changed traffic conditions across the whole emirate or raised Dubai’s overall road capacity by the same percentage. The stated capacity and travel-time changes refer to this local project as described by the authority. The release provides no independent traffic dataset or separate measurement series against which to compare the figures.

RTA described the work as part of a series of targeted traffic solutions intended to improve the local road network and links with major corridors. It said such interventions are designed to improve performance at busy locations and make everyday journeys in residential communities easier. The technical scope reported for this project is the addition of one lane to a two-lane road and a length of more than one kilometre. The source does not state the exact kilometre length, so a more precise distance cannot be reported. It also gives no project cost, construction schedule or detailed intersection design.

The same announcement says RTA is studying a separate “rat running” project in target areas including Al Mizhar 4, to limit the use of internal residential streets as shortcuts. That proposal is described as under study, not as a completed traffic measure; the authority is considering solutions tailored to each area. RTA also says it monitors road performance and traffic patterns to identify locations for targeted improvements. The release confirms completion of the lane expansion but does not give an opening ceremony date, exact construction completion day or lane-use counts. The event date is therefore tied to the source review date.

The two impact percentages are agency-reported outcomes for a local infrastructure project; they should not be read as guaranteed gains for drivers across Dubai. The 50% capacity increase concerns the road section, while the 25% journey-time reduction refers to the specified direction and route. RTA did not say which hours were compared or how seasonal changes in traffic were handled. Those limits are why the figures are attributed to the authority. The verified development is that RTA reported completing a third lane on the existing two-lane approach as its targeted improvement.