MapQuest said that less than 1% of the users will contact them for a variety of reasons, Very few people get the wrong driving directions, and some of the very small number of people reporting website error. Because the amount of management data of the MapQuest is very large and these data are from different sources. Therefore, it’s impossible to ensure its maps and driving directions correct completely.
Occasionally there will be such a situation, MapQuest said it should go north of the single line, but in fact that the road is in the south; Or say that it should turn left, in fact that it need to turn right. Some of the most common errors of MapQuest include:
1.The address locator is inaccurate (caused by geocoding estimation).
2.Can not recognize the address and the highway exit is incorrect.
If MapQuest can not identify an address, Usually because the address information has not been updated to MapQuest systems. If your house is located on a street just built last year, MapQuest may not know that its exist. Changes in city streets may take several years to enter the MapQuest database.
First, the city must hold a dedication ceremony for the new road after the road was completed and put into use, it may take a few days, a few months or a few years to fulfill this formality. After completing, the U.S. Postal Service will formally recognize it. After United States Postal Service admitted it, the Map Production Company (the company offers data for MapQuest) will update this information in next map updating time.
Then, MapQuest will add a new road information to their data in the next update. This is a long process.
The incorrect highway number (although it is not a widespread problem) For MapQuest users may be a big problem. Probably in the year 2004, several counties in Utah have delayed a few dates.
2004, Utah Department of Transportation changed the I-15, I-70 and I-80 along the hundreds of kilometers of postal marks and exit signs to correct the previous error flag. Ministry of Transportation informed this situation to MapQuest in December 2004. However, due to the MapQuest data are from other sources, so its data provider did not correct the data before it confirmed this change. Thus, before November 2005, the MapQuest database is still using the incorrect exit numbers over 80 Utah highway.
MapQuest provides some links in the “Help” section, you can report the driving directions problem in the map. After reporting, MapQuest will start the error repairing process. MapQuest reports the error to its data provider, provider will confirm the error (people drive to the location and check with their eyes) and correct the error, then the corrected new information will be provided to MapQuest.