No, dear friends, according to registration plate of this MAZ model, this is military fire truck.
Russian wheeled military vehicles had black registration plates with white numbers and letters, looks like pattern below:
12-34 abwhere 1, 2, 3, 4 - four characters, ab - two letters. Those characters and letters were put on plate according to special designation system.
I see, dear Subjugator has made an error - he has drawn on registration plate "H6" (one letter and one character), whereas he should draw two letters instead of these symbols.
Let's go further - the characters of number "11 62" must be divided by dash (like in pattern above).
And, finally - those characters and letters must to be convex, because of these symbols do by way of punching. And symbol's font looks like Czech-style or East German style, but not like Russian style.
Below are some interesting pictures of MAZ-537 - for those, who want to build more unusual vehicles:
1) Civilian fire truck:

2) KZKT + ISU:

3) Else one military fire truck:

Enjoy !