Posting
Some of the Posts are fire stations, some are street corner gas stations, one is a Taco Cabana!!! It all depends... They are actually built in the cad as street intersections. The new posting plan is based off of their new mapping system called MARVLS (pronounced: marvolus) . It uses historical CAD data and combines it with the GPS data from the trucks and keeps track of how long it takes a unit to go from point A to point B at any given time on any given day.
Example.
It knows that it takes M90 4min 22 sec to make it from their station to Loop 494 and FM 1485 at 2am on the second saturday of the month, however it takes them 8min 45 sec to get to the same location at 3pm on a friday because of school traffic (GPS monitored speed via historical data.) SO.... Every ambulance has what they call an "ameba" surrounding it in green yellow and red. As the ambulance moves, the "ameba" morphes and changes shape to represent what geographic locations the unit can cover based off of historical data and street level routing. Green = 6 min, Yellow= 8, red i think is 10. The Idea is to try to cover the greatest % of land with the available resources.
On top of all of this... MARVLS keeps track of calls. It is able to give statistical predictions on where the next 911 call will come from. Now we all know that you cannot predict when emergencies will occur, but again it uses historical data to tell me that there is a 75% chance that on the second tuesday of the month between 6 and 7 pm there will be a 911 call in Willis....
The Idea is to lower responce times and reduce the amount of current posting. There are some ambulances that are less than 6 months old with over 60K miles on them.....