GPS-based traffic monitoring system

1. A cellular phone comprising:

a cellular phone control module to control the cellular phone;

a global positioning system (GPS) to selectively generate vector and location data; and

a transmitter,

wherein the cellular phone control module selectively wirelessly transmits the vector and location data using the transmitter when:

the cellular phone is traveling on a first set of predetermined roads; and

the cellular phone is traveling at a first speed that is greater than a predetermined speed, the predetermined speed being set based on a walking speed,

wherein the cellular phone control module does not transmit the vector and location data when the cellular phone is traveling on a second set of roads, and

wherein the cellular phone identifies a new walking path if the first speed is between a first threshold and a second threshold that is greater than the first threshold.

2. The cellular phone of claim 1 , wherein the cellular phone includes a receiver to communicate with the cellular phone control module and to wirelessly receive traffic reports from a remote traffic monitoring system.

3. The cellular phone of claim 2 , wherein the traffic reports include traffic speed information for traffic traveling on at least one of the first set of predetermined roads.

4. A traffic monitoring system comprising:

the cellular phone of claim 1 ; and

a remote traffic monitoring system to receive the vector and location data and that compares a speed of the cellular phone on a first road to a third threshold and to an average traffic speed on the first road and that selectively triggers contact with the cellular phone.

5. The cellular phone of claim 1 , wherein the cellular phone control module transmits the vector and location data on a periodic basis.

6. The cellular phone of claim 1 , wherein the cellular phone control module monitors changes in direction of the cellular phone and transmits the vector and location data when the cellular phone changes direction greater than a direction change threshold.

7. A traffic monitoring system comprising:

the cellular phone of claim 1 ; and

a traffic estimating module to estimate an average traffic level on a road during prior ones of first periodic periods.

8. The traffic monitoring system of claim 7 , further comprising a traffic monitoring module to estimate a current traffic level on the road during a first portion of a current one of the first periodic periods based on vector and location information received from at least one of cellular phones and vehicles during the first portion.

9. The traffic monitoring system of claim 8 , further comprising a traffic predicting module to predict traffic levels on the road during a remaining portion of the current one of the first periodic periods based on the average traffic level and the estimated current traffic level during the first portion.

10. The cellular phone of claim 1 , wherein the predetermined speed is approximately 5 miles per hour.

11. The cellular phone of claim 1 , wherein the cellular phone identifies a new biking path if the first speed is between a third threshold that is greater than the second threshold and a fourth threshold that is greater than the third threshold.

12. A method for operating a cellular phone comprising:

providing a cellular phone control module that controls the cellular phone;

selectively generating vector and location data using a global positioning system of the cellular phone;

selectively wirelessly transmitting the vector and location data using the transmitter when:

the cellular phone is traveling on a first set of predetermined roads; and

the cellular phone is traveling at a first speed that is greater than a predetermined speed, the predetermined speed being set based on a walking speed,

not transmitting the vector and location data when the cellular phone is travelling on a second set of roads; and

identifying a new walking path if the first speed is between a first threshold and a second threshold that is greater than the first threshold.

13. The method of claim 12 , further comprising wirelessly receiving traffic reports from a remote traffic monitoring system at the cellular phone.

14. The method of claim 13 , wherein the traffic reports include traffic speed information for traffic traveling on at least one of the first set of predetermined roads.

15. The method of claim 12 , further comprising:

receiving the vector and location data at a remote traffic monitoring system;

comparing a speed of the cellular phone on a first road to a third threshold and to an average traffic speed on the first road; and

selectively triggering contact with the cellular phone.

16. The method of claim 12 , further comprising transmitting the vector and location data on a periodic basis.

17. The method of claim 12 , further comprising:

monitoring changes in direction of the cellular phone; and

transmitting the vector and location data when the cellular phone changes direction greater than a direction change threshold.

18. The method of claim 12 further comprising estimating an average traffic level on a road during prior ones of first periodic periods.

19. The method of claim 18 , further comprising estimating a current traffic level on the road during a first portion of a current one of the first periodic periods based on vector and location information received from at least one of cellular phones and vehicles during the first portion.

20. The method of claim 19 , further comprising predicting traffic levels on the road during a remaining portion of the current one of the first periodic periods based on the average traffic level and the estimated current traffic level during the first portion.

21. The method of claim 12 , wherein the predetermined speed is approximately 5 miles per hour.

22. The method of claim 12 , further comprising identifying a new biking path if the first speed is between a third threshold that is greater than the second threshold and a fourth threshold that is greater than the third threshold.

23. A cellular phone comprising:

cellular phone control means for controlling the cellular phone;

global positioning means for selectively generating vector and location data; and

transmitting means for transmitting data,

wherein the cellular phone control means selectively wirelessly transmits the vector and location data using said the transmitting means when:

the cellular phone is traveling on a first set of predetermined roads; and

the cellular phone is traveling at a first speed that is greater than a predetermined speed, the predetermined speed being set based on a walking speed,

wherein the cellular phone control means does not transmit the vector and location data when the cellular phone is traveling on a second set of roads, and

wherein the cellular phone identifies a new walking path if the first speed is between a first threshold and a second threshold that is greater than the first threshold.

24. The cellular phone of claim 23 , wherein the cellular phone includes receiving means for communicating with the cellular phone control means and for wirelessly receiving traffic reports from a remote traffic monitoring system.

25. The cellular phone of claim 24 , wherein the traffic reports include traffic speed information for traffic traveling on at least one of the first set of predetermined roads.

26. A traffic monitoring system comprising the cellular phone of claim 23 and further comprising remote traffic monitoring means for receiving the vector and location data and for comparing a speed of the cellular phone on a first road to a third threshold and to an average traffic speed on the first road and for selectively triggering contact with the cellular phone.

27. The cellular phone of claim 23 , wherein the cellular phone control means transmits the vector and location data on a periodic basis.

28. The cellular phone of claim 23 , wherein the cellular phone control means monitors changes in direction of the cellular phone and transmits the vector and location data when the cellular phone changes direction greater than a direction change threshold.

29. A traffic monitoring system comprising:

the cellular phone of claim 23 ; and

traffic estimating means for estimating an average traffic level on a road during prior ones of first periodic periods.

30. The traffic monitoring system of claim 29 , further comprising traffic monitoring means for estimating a current traffic level on the road during a first portion of a current one of the first periodic periods based on vector and location information received from at least one of cellular phones and vehicles during the first portion.

31. The traffic monitoring system of claim 30 , further comprising traffic predicting means for predicting traffic levels on the road during a remaining portion of the current one of the first periodic periods based on the average traffic level and the estimated current traffic level during the first portion.

32. The cellular phone of claim 23 , wherein the predetermined speed is approximately 5 miles per hour.

33. The cellular phone of claim 23 , wherein the cellular phone identifies a new biking path if the first speed is between a third threshold that is greater than the second threshold and a fourth threshold that is greater than the third threshold.