Road speed limit project

Hello, I’ts my first post here, so dont get mad if it’s not the right subforum for this topic. I would just like some ideas/opinions for my project, because maybe I am forgetting something in addition to i am new with arduino

the idea is a device that tracks a car’s speeds and omits a message to the driving control authority, in case the car exceeds the speed limit. so What I am trying to build, is a Speed limit notification system that can sense my location and speed using GPS then compare it to defined speed for the current road using algorithm then send data over GSM network to my webserver or mobile phone warning me if i exceed the speed limit .

What I need to achieve (and my plans to do so) are:

  1. Arduino Uno

  2. GPS module

http://www.zeroohm.ae/Adafruit-Ultimate … search=gps

  1. GSM shield for network connection or sms sending

http://www.zeroohm.ae/Arduino-GSM-Shiel … search=gsm

  1. so i will defined maybe two or three roads using this techniques and define any speed i want

http://forum.arduino.cc/index.php?topic=136265.0

Is these parts good ?

is it ok to connect GPS module through gsm shield to Arduino ?

I’m working on this project alone, maybe I have missed something, maybe theres a better solution for something, maybe someone else has some great ideas they are willing to share, regarding this idea and how to pull it off.

Thanks all

and sorry about my english