# Road Question... **URL:** \ **Category:** NYSpeed Off Topic\ **Created:** [October 31, 2007, 8:34pm UTC](https://forums.speedlife.net/t/road-question/37960 "2007-10-31T20:34:08Z")\ **Posts on this page:** 1\ **Showing post:** 26
**Author:** ![ultradriver10000](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ultradriver10000/32/7397_2.png) [@ultradriver10000](https://forums.speedlife.net/u/ultradriver10000)\ **Post date:** [November 1, 2007, 8:05am UTC](https://forums.speedlife.net/t/road-question/37960/26 "2007-11-01T08:05:03Z")
How would it take into account that the line crosses two lanes though? What if two cars are driving in relative closeness in consecutive lanes? How can you determine the difference between a semi and two cars tailgating? Semi’s don’t always have dual axles front and rear, and trailer length varies. Unless the data is processed by a relatively advanced computer program to filter out only usable data I don’t see how successful one crossing two lanes would be. --- _[View the full topic](https://forums.speedlife.net/t/road-question/37960)._