Which GPS has change route feature

as a rookie you should learn to use a map, and not depend on a GPS, calling a shipper/reciever is a good idea, make sure to say to them, "dont forget im in a 18wheeler 13'6 tall", Ive had companies lead me in the wrong direction before in upstate NY. when I called them back about the low bridge, they said, OH!, didnt realize your in a truck, but back to the GPS, when It comes to features, you get what you pay for, save your money, and when the time is right, buy a good GPS set for trucks

 

I would buy a rand mcnally GPS and update it every 4-6 weeks
the uddates are free and I have little to no problem using them

 

I have been driving truck for almost 2 years and I have the rand mcnally 700
I have used it in NYC and it has saved me

 

My Pete 387 has a factory built in dash GPS. It's the best GPS I ever seen. It's a Navaid powered by Lowrance C. The same company that makes ship navigation aids. It's truck friendly with all the truckstops, scales, rest area's and any business you want to find like Walmart. I even use it to order food delivered.
It even has a built in picture viewer and MP3 player. The directions come across the stereo system speakers.
You can alter any route if you want to match your map reading skills and known directions. Most of the time it's correct except for a few local restrictions which is easily corrected. It also has Google Earth loaded and you can zoom in and check out the building and parking lot you are going to. That's a handy feature with a place that has multiple entrances and you want to see the docks and trucks.
It has multiple more features including all trip stats. The ETA is very accurate as it calculates all the different speed limits enroute.

It won't be long, all trucks will have them in dash. The ones that hate them can look at the picture viewer, lol.

I haven't seen a GPS you can't alter the route? Most allow you to program more than one trip. That is an easy way to alter a route. Just break your trip up into legs by the know routes and it will take you in the right way. Many you can touch the screen and say go here at the correct turn/road. Than the route will fix itself.