The Kenya National Highways Authority (KeNHA) announced traffic congestion along the Rironi-Nakuru-Mau Summit Road and Rironi-Mahiu-Naivasha Road.

In a public notice released on December 22nd, 2025, KeNHA cautioned motorists travelling along this lane to strictly observe lane discipline.

The Authority also noted that observing traffic rules while on the road will ensure the smooth flow of vehicles and will prevent accidents.

“Motorists travelling along these corridors are advised to exercise caution and strictly observe lane discipline to ensure smooth traffic flow and to prevent congestion and accidents,” read part notice.

KeNHA on Traffic on Major Highways

The Agency is working closely with the National Police Service (NPS) to control the traffic situation along various routes and ensure safety on the roads.

“KeNHA, in collaboration with the National Police Service, continues to manage traffic along these routes. However, cooperation and responsible conduct of all road users remain critical to ensuring safe and timely journeys,” said KeNHA.

Also Read: KeNHA Issues Festive Travel Advisory as Major Highways Face Heavy Congestion

Alternative Routes

As traffic snarl-ups, KeNHA has urged motorists to use the following alternative routes:

1. Thika – Magumu – Njabini – Olkalou – Dundori – Lanet – Nakuru
2. Flyover – Njabini – Olkalou – Dundori – Lanet – Nakuru
3. Naivasha – Njabini – Olkalou – Dundori – Lanet – Nakuru
4. Gilgil – Olkalou – Dundori – Lanet – Nakuru
5. Ngong – Suswa – Narok – Mau Narok – Nakuru
6. Nakuru – Kampi ya Moto – Eldama Ravine – Makutano
7. Nakuru – Njoro – Mau Summit

Also Read: KeNHA Announces Mass Hiring for Engineers and Drivers — How to Apply

What Might Have Led to a Traffic Jam

During the Christmas holiday, most Kenyans travel upcountry to reunite with relatives, family and friends in celebrating Christmas.

Therefore, major roads across the country are busy in transporting people, goods and services from one destination to another.

An increase in traveling in festive season on many occasions leads to traffic congestion and an increase in fares.

A section of Kenyan road constructed under KeNHA. PHOTO/ KeNHA.