The Kenya National Highways Authority (KeNHA) has issued a traffic advisory along the Rironi–Nakuru–Mau Summit (A8) Road and the Rironi–Mai Mahiu–Naivasha (A8 South) Road amid the festive season exodus to rural Kenya.
In a notice dated Wednesday, December 24, 2025, the authority has urged motorists to exercise caution and adhere strictly to lane discipline to prevent congestion and accidents.
“The Kenya National Highways Authority (KeNHA) has noted a surge in traffic volumes along the Rironi – Nakuru – Mau Summit (A8) Road and the Rironi – Mai Mahiu – Naivasha (A8 South) Road,” read the notice.
KeNHA Issues Alternative Routes Amid Heavy Traffic
The Kenya National Highways Authority stressed that smooth and safe journeys depend on the cooperation and responsible conduct of all road users.
In the event of traffic snarl-ups, motorists have been advised to use the following alternative routes:
- Thika – Magumu – Njabini – Olkalou – Dundori – Lanet – Nakuru
- Flyover – Njabini – Olkalou – Dundori – Lanet – Nakuru
- Naivasha – Njabini – Olkalou – Dundori – Lanet – Nakuru
- Gilgil – Olkalou – Dundori – Lanet – Nakuru
- Ngong – Suswa – Narok – Mau Narok – Nakuru
- Nakuru – Kampi ya Moto – Eldama Ravine – Makutano
- Nakuru – Njoro – Mau Summit
At the same time, the Kenya National Highways Authority urged all motorists to plan their trips carefully and travel safely during the festive season.
Also Read: KeNHA Announces Permanent and Pensionable Jobs, Including Positions with KCSE Grade D Qualifications
For further inquiries, motorists can contact KeNHA via email at [email protected], the toll-free line 0800-211-244, or customer care at 0700 423 606. Updates are also available on X at @KeNHAKenya and on the official website www.kenha.co.ke.
About the A8 Highways
The A8 highway is a vital segment of Kenya’s Northern Corridor, connecting Nairobi to Western Kenya and landlocked neighbours, including Uganda, Rwanda, and the DRC.
Heavy congestion, frequent accidents, and holiday delays have long plagued it. A major upgrade will cover a total of 233 km across two linked segments under one Public-Private Partnership (PPP) project:
- Main A8 Route: Rironi → Naivasha → Nakuru → Mau Summit (175 km)
Primary northwest route through the Rift Valley via Gilgil and Nakuru City. - A8 South Route: Rironi → Mai Mahiu → Naivasha (58 km)
Steep escarpment descent via Maai Mahiu, which is notorious for heavy trucks and steep hills.
Also Read: KeNHA Issues Advisory Ahead of Rironi-Nakuru-Mau Summit Highway Launch
The upgrade was officially launched by President William Ruto on 28 November 2025, kicking off construction after prolonged delays.
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