Seven people died on the spot after a matatu they were travelling in lost control and plunged into the Kipkaren River at Musembe along the Eldoret-Bungoma Road on Saturday evening.
Eight more people were rushed to the Lumakanda Sub-county hospital with a number in critical condition.
According to police reports, the Eldoret-bound matatu was speeding and it is said that the poor night visibility led to the driver losing control and hitting into the river.
Cases of road accidents have been on the rise in the country, with the recent Salgaa, Mai Mahiu and Kisii accidents claiming more lives in the past days.