Jakarta – Foreign tourists driving in Indonesia can encounter traffic rules that differ from those in their home countries. One of the most commonly misunderstood regulations involves turning left at an intersection when the traffic light is red.
For years, many drivers in Indonesia believed they could automatically turn left even when facing a red light. That assumption is no longer correct, and visitors unfamiliar with the rule could easily make a mistake by simply following the vehicle in front of them.
Under Indonesia’s Road Traffic and Transportation Law No. 22 of 2009, drivers at an intersection equipped with traffic signals are generally prohibited from turning left immediately. The exception applies only when a traffic sign or traffic signal specifically permits the manoeuvre.
In simple terms, a red light means drivers intending to turn left should stop unless there is a sign or dedicated signal allowing them to continue. This is an important distinction for tourists renting cars or motorcycles, particularly in busy areas where local traffic can appear to move in ways that are difficult for first-time visitors to interpret.
Not Every Red Light Allows a Left Turn
The confusion partly comes from Indonesia’s previous traffic practice, which was widely associated with the principle of allowing drivers to turn left directly unless a sign prohibited it. The current regulation reversed that general assumption.
Today, the default position is the opposite. Drivers must stop at a red light, and turning left is only allowed when authorities have provided a specific sign or traffic signal permitting vehicles to do so.
This means tourists should not assume that a vehicle moving through the intersection ahead of them is necessarily following the rule. Traffic conditions can vary from one junction to another, and some intersections have dedicated signs allowing a continuous left turn while others do not.
In major tourist destinations such as Bali, this can be particularly relevant. Visitors may be navigating unfamiliar roads while dealing with dense traffic, motorcycles, pedestrians and local driving habits, making it essential to pay close attention to official road signs rather than simply following the flow of vehicles.
Look for a Specific Sign or Signal
The key is to check whether there is a sign indicating that vehicles may continue to the left. Indonesia uses traffic signs and signal arrangements to create exceptions at selected intersections where turning left during a red light is considered appropriate.
If such permission is present, drivers may proceed carefully after ensuring the road is clear. However, they must still watch for pedestrians crossing the road, motorcycles approaching from other directions and other vehicles with the right of way.
Without a sign or dedicated signal, drivers should remain behind the stop line and wait for the appropriate traffic light. Moving through the intersection simply because the intended direction is to the left can still constitute a traffic violation.
The rule may feel unfamiliar to visitors from countries with different traffic systems. In some places, turning during a red light is broadly permitted under certain conditions, while in others it is almost always prohibited.
Indonesia’s system requires drivers to pay attention to the specific arrangement at each intersection. There is no universal assumption that a left turn is automatically allowed whenever the main traffic signal is red.
Following Other Vehicles Can Be Risky
One of the easiest mistakes for foreign tourists to make is following the vehicle ahead without checking the traffic signal or road signs. In congested traffic, drivers may feel pressure to keep moving, especially when motorcycles and cars begin to flow around them.
However, road users should remember that traffic rules are not determined by what the surrounding vehicles are doing. A driver who proceeds through a red light without a permitted left-turn sign could still be violating the regulation.
Tourists should also take extra care when driving rental motorcycles. At busy intersections, the movement of two-wheeled vehicles can make traffic appear less structured, but the same basic traffic signals and road rules still apply.
Before turning, drivers should check the traffic light, look for any signs that allow the manoeuvre and make sure the intersection is clear. Pedestrians, cyclists and vehicles travelling in other directions must also be considered.
A Simple Rule to Remember
For foreign visitors, the easiest way to remember Indonesia’s rule is simple: do not assume you can turn left on red.
Stop first, check the traffic signs and signals, and only proceed if there is a specific indication that a left turn is allowed. If no such sign or signal is present, wait for the traffic light to change.
Understanding this rule can help tourists avoid unnecessary confusion and reduce the risk of violating traffic regulations while driving in Indonesia. When in doubt, following the official signal rather than the surrounding traffic is the safest option.