Are there any convenient libraries for working with the Google Maps API Javascript?

Question

JavaScript

Good day!
There is the following task: To implement the output of the Google Maps map with the output of cars on it. Vehicle data is obtained via API, it is necessary to display the positions of vehicles with constant updating of data via API. I would like to get a more beautiful code than a recursive call and constant data verification.

Answer 1

hpneo.github.io/gmaps

Answer 2

Here you can have two problems with legal use:
1) You can not use the API for dispatch systems;
2) Services should be free and open to everyone.
Well, or interprays subscription.