Kenya National Highways Authority said that the trial phase on the Nairobi Expressway will not be free as toll fees will be applied at the point of exit.
Transport CS James Macharia on Saturday announced that the road was not officially open for public use.
There will be three modes of payment for motorists using the Nairobi Expressway, which include; cash, Electronic Toll Collection (ETC) and Manual Toll Collection(MTC).
KeNHA said that motorists who opt for cash are not obligated to register before their trip on the Nairobi Expressway.
On the ETC mode, the service allows toll points to be electronically deducted through the pre-installed On-board Unit (OBU) device, offering a non-stop road service.
For the MTC mode, the motorists will have a card that can be loaded with toll points to be used at toll stations.
"Priorities will be given to ambulances, police vehicles, military vehicles and fire engines," KeNHA added.
Last month, the government revised toll rates for the expressway by 16 per cent, meaning that motorists will have to pay more to access the road.
This was done to reflect foreign exchange changes for the dollar-denominated charges, following the weakening of the Kenyan shilling.
The toll rates are set for future adjustments based on not just the prevailing exchange rate, but also changes in the Consumer Price Index.
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