A heavy traffic jam is building up on the Kamandura-Mai Mahiu-Narok road following an accident involving a bus and a trailer along the busy road.

In the early morning incident, the trailer and a bus belonging to the Ena Coach bus company collided.

According to witnesses, the truck must have been overtaking at a bend when it collided with the bus and images obtained from the scene support the theory.

"The truck driver did a mistake. Overtaking probably at a very sharp bend," said one observer.

Luckily, the impact was not so severe and nobody was injured in the incident.

Motorists are therefore advised to consider alternative routes to Mai Mahiu or Naivasha town as the accident could cause a traffic jam because the road is narrow.

Kenyans plying that route have for a long time appealed to the government to expand the Kamandura-Mai Mahiu-Narok road and put in more safety measures.