A truck carrying bricks collided with the motorcyclists in Lenteng Agung, South Jakarta, on Tuesday morning as they were allegedly driving on the wrong side of the road.

The South Jakarta Police said they had interrogated the truck driver and had not, so far, found any evidence of wrongdoing on his part.

"We're investigating whether there was intent from the truck driver to cause the collision, but based on our investigation so far, the cause of the incident was motorcyclists riding in the wrong lane," traffic director Comr. Bayu Marfiando said, as reported by Kompas.com.

According to Bayu, the truck driver said he was trying to avoid a motorcyclist who had suddenly begun to overtake him from the right before the accident occurred. Because of this, the truck driver did not see the seven motorcyclists riding on the wrong side of the road in front of him, leading to the crash, he said.

Bayu said at least five people were injured in the incident, three of whom had sustained severe injuries.

He said traffic police would ticket the seven motorcyclists for violating traffic laws. Authorities are also investigating the possibility of charging them with criminal offenses.

State-owned insurance company Jasa Raharja said it would not compensate the motorcycle drivers.

"Based on the 1964 Mandatory Traffic Accident Compensation Law, Jasa Raharja will not compensate those who cause multi-vehicle collisions," president director Rivan A. Purwanto said on Wednesday.

He said the state insurer would also not cover single-vehicle crashes and accidents caused by train crossing trespassing, drunk driving, suicide attempts, racing, or fleeing from law enforcement.

"We hope that road users can continue to follow traffic rules and drive safely to prevent similar accidents from occurring in the future," Rivan said.

Some social media users said the motorcyclists deserved the fines – and for their insurance claims to be denied – for breaking the rules of the road.

Others said the fines would do little to deter wrong-way driving and sidewalk driving, which are common occurrences in the country.

A day after the crash, motorcyclists were spotted going the wrong way on both sides of the road and the sidewalk around the scene of the accident, according to various media reports.

The South Jakarta Police have said they will deploy patrol cars equipped with traffic enforcement cameras around the site of the incident.

But with or without preventive police patrols, Bayu said, everyone was obligated to follow traffic rules.

On Wednesday, National Police Traffic Corps chief Insp. Gen. Firman Shantyabudi said he supported the efforts to deter wrong-way driving.

“This should be a lesson to all road users that everyone must follow road rules,” he said, as quoted by Tempo.co.

Transportation expert Harya S. Dillon urged authorities to be persistent in enforcing stricter measures against counterflow driving.

"The police need to carry out strict measures. There's no other way. Ticket motorcyclists who drive the wrong way or use sidewalks or bicycle lanes. Don't wait until there are victims of traffic accidents," he said on Tuesday.

Djoko Setijowarno of the Indonesian Transportation Society (MTI) also urged the police to increase monitoring for traffic violations and demanded greater fines for offenders.