The crackdown, which was the first after NTSA acquired 50 new alco-bow gadgets, was held on major roads including Thika Superhighway and Lang'ata Road
Motorists were stopped and subjected to a breathalyzer test where those found to have exceeded the minimum level were arrested.
Earlier on, NTSA Director General Francis Meja stated that the gadgets had been distributed all over the country.
Meja noted that the new gadget gives results faster and has a fingerprint reader to show the driver's history.
"We have been undertaking evidence-based options and the addition of the gadgets will enhance our efforts significantly" Meja stated.
The NTSA Boss noted that 80% of accidents on Kenyan roads were caused by human behaviour.
In April, the court of appeal ruled that it was illegal for motorists to be charged under rules that operationalized the Traffic Act.
The appellate judges ordered that motorists who failed the alco-blow test should be charged under the Act itself and not the rules