How to make speedmeter ?

[sianbg]

Hi, i want to  make speedmeter for vehicles. Is there any easy way to do this ? I know it depends on change of X,Y,Z for unit of time(dt). Is there anyone who can show me mathematical formulas ? Can i use player.position in Client side ? Sorry for my bad english

Edit: I found this:

(((x ^ 2) + (y ^ 2) + (z ^ 2)) * 100) * 1.6)

I can get velocity with this https://wiki.rage.mp/index.php?title=Vehicle::velocity . I'll try it later.

Edited November 16, 2017 by sianbg