Nairobi, July 21 -- Nairobi and Kiambu matatu owners have introduced new routes beyond traditional zones to boost their earnings amid over supply of vehicles serving city dwellers.

Operators have applied for new licenses from National Transport and Safety Authority (NTSA) to expand to new areas, citing increased competition on city estate routes.

The move has triggered turf wars with operators in the regions protesting transport regulator's decision to give city vehicles the greenlight to ply their areas.

"Nairobi is saturated and as matatu operators and business people, we are going where there is money," Nairobi chairman of Matatu Operators Jamal Ibrahim said.

Machakos is one of the routes that has witnessed the highest invasion of pu...