Avishai Davidson was born in Rishon Lezion. He learned for two years in the Talmud Torah and then - in the elementary school ("Chaviv"). At a very young age when he got orphaned from his father, he had to stop his studies and help in taking care of the farmstead and the family's keep. He worked in plowing, in orchards, in vineyards and in transporting wine barrels on the back of a mule from the Township to Jaffa's Port.
He was also engaged in wells' drilling and locksmiths' jobs.
He was a member of the Haganah; was an athlete: a member of Rishon Lezion's football team "Balfour" and "Yeelim"; participated in the Maccabiah which took place in Jerusalem in 1921 and won an awards for Pole Vault, Long Jump and Sprint.
In the year, 1925, he began his extensive transportation activity. He bought an old Ford car - from the time of the First World War - and established the Cooperative "Jehuda" – a passengers' transport service from Rishon Lezion to Tel - Aviv.
Later, in the year 1931, he united the Southern region's transportation companies "Jehuda", "Hadarom" and "Hanegev" and the "Drom Jehudah" association was formed. As the association's spokesman and member of the management, he represented in front of the British government, the Jewish and Arabic public transportation interests in the country. In 1951, still serving as manage of "Drom Jehudah", he united the cooperative with "Shachar" and "Eged" under the name "Aguda Shitufit Eshed". Later, the association returned to be called "Eged", a name that was suggested by Bialik already in the forties.
During World War II, he was involved in transporting ammunition and later, took part in bringing to Eretz Israel illegal immigrants.
Simultaneously, with his activity, throughout the years, in the country's transport management, he continued working in the orchard, the vineyard and in agriculture, and was also active in other public areas.
He served as a member of the Executive Committee of the Farmers' Association. He was a member of the Vineyards' Growers Union.
He was a member of Rishon Lezion's Local Council and its delegate to the Farmers Association's conferences.
He established in Migdal Haemek a beer factory and later served as Chairman of the Board of the beer's enterprises in the country. He took part in setting up factories in Mitzpe Ramon (corks and plastic boxes). As of the year 1961, and for 22 years, he ran the company "Pri Taz". He was a member of Friends' Circle of the hospital Assaf Harofeh.
In 1998, Avishai Davidson won the title "The Valued Rishon Lezion's Citizen".