Trolleybus ЯТБ-1

YATB-1 is a Soviet high—floor trolleybus for intercity passenger transportation manufactured by the Yaroslavl Automobile Plant. The abbreviation "YATB-1" means "Yaroslavl trolleybus, the first model".
 
Serial production of the YATB-1 lasted from July 1936 to November 1937. In the third quarter of 1936, 22 trolleybuses were made at YAGAz, and in the fourth quarter — 97. In total, 119 for the year, instead of the planned 250. In January 1937, they continued to produce the YATB-1 and began to develop a lightweight version of the YATB-2, which was supposed to be mastered in production from the release of the 200th copy.