Mumbai Coastal Road speed limit, vehicle rules and restrictions after speeding BMW crash near Marine Drive killing three

A speeding BMW crashed off Mumbai's Coastal Road in the early hours of Sunday, killing three people inside the car and leaving another critically injured. The car was reportedly headed from Marine Drive towards Haji Ali when the driver lost control, hit a barrier and fell into an under construction parking area below.

The crash has once again put the spotlight on Mumbai's Coastal Road, a corridor that has become popular with motorists for its smooth surface and long open stretches. It comes just weeks after Mumbai Police booked several supercars for racing through the road's tunnel section, and it has reopened questions on speed limits, vehicle rules and access restrictions on the corridor.

What happened in the crash?


The BMW was travelling on the southbound stretch of the Coastal Road when the driver lost control of the vehicle. The car struck a roadside barrier and plunged into a parking area that is still under construction. Three occupants died in the crash, and a fourth person was rushed to hospital in critical condition. Police are investigating the exact cause of the crash, including the speed at which the car was travelling.

What is the speed limit on Mumbai Coastal Road?

The Coastal Road has three different speed limits depending on the stretch. Motorists can drive up to 80 kmph on the main carriageway. Inside the twin tunnels, the limit drops to 60 kmph. At ramps, curves and interchanges, the speed limit is further reduced to 40 kmph. These limits are meant to account for the different kinds of road surfaces and structures along the corridor, from the open sea facing stretch to the underground tunnel section.

Which vehicles are allowed on the corridor?

Only passenger cars and authorised buses, including BEST and state transport buses, are currently permitted on the Coastal Road. Two wheelers, three wheelers, bicycles and pedestrians are not allowed on the main carriageway. Heavy vehicles such as trucks, tempos, trailers, mixers and tractors are also barred from using the corridor. Officials say these restrictions are meant to keep traffic moving smoothly and reduce the risk of accidents on a road built for high speed travel.

What are the access and stopping rules?

The Coastal Road works as a fully access controlled corridor. Motorists can only enter and exit at designated points, and there are no service lanes, fuel stations or rest areas along the main route. Stopping, reversing or taking a U-turn on the carriageway is not allowed. If a motorist misses their intended exit, they have to continue driving to the next interchange rather than turning back.

What are the rules inside the tunnels?

The Coastal Road includes twin tunnels that run for close to 3.45 km under the Arabian Sea, with three lanes in each tunnel tube. Since the tunnel section is structurally different from the open carriageway above ground, it carries its own speed limit of 60 kmph. Motorists are advised to maintain lane discipline and avoid sudden braking or lane changes inside the tunnel, given the confined space and limited visibility compared to the open stretch.

Is photography allowed on the road?

Photography and videography are not permitted on the Coastal Road or the adjoining Sea Link. Motorists who stop their vehicles to click pictures or record videos can face penalties under the notified traffic rules. The restriction is meant to prevent unnecessary stoppages and distractions on a corridor designed for continuous, high speed movement.

How is speeding monitored on the corridor?

Authorities use CCTV cameras and automatic number plate recognition systems installed along the Coastal Road to track vehicle speed and detect violations. This same surveillance network had earlier helped police identify and book supercars that were caught racing through the tunnel stretch. Officials say enforcement is likely to be stepped up further following the latest fatal crash near Marine Drive.

Why does the Coastal Road keep seeing such incidents?

The Coastal Road was built to ease congestion along Mumbai's western coastline and cut travel time between south Mumbai and the western suburbs from close to two hours to under an hour. But the same features that make it convenient, its smooth surface and long uninterrupted stretches, have also made it a stretch where drivers tend to speed. With this being the latest in a series of overspeeding incidents on the corridor, authorities are expected to review enforcement and signage along the route in the coming weeks.