# Why does traffic come in swarms on interstates?

**URL:** <https://boards.straightdope.com/t/why-does-traffic-come-in-swarms-on-interstates/324725>\
**Category:** Factual Questions\
**Created:** [October 4, 2005, 12:46pm UTC](https://boards.straightdope.com/t/why-does-traffic-come-in-swarms-on-interstates/324725 "2005-10-04T12:46:54Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![groman](https://avatars.discourse-cdn.com/v4/letter/g/73ab20/32.png) [@groman](https://boards.straightdope.com/u/groman)\
**Post date:** [October 4, 2005, 11:56pm UTC](https://boards.straightdope.com/t/why-does-traffic-come-in-swarms-on-interstates/324725/21 "2005-10-04T23:56:31Z")

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I don’t understand why people an issue with someone passing you on the right. If the speed difference is significant (20MPH+) I prefer to be passed on the right and to pass on the right when passing simply because it’s easier to negotiate and less likely to startle the driver. Also, for me, it’s a habit that I formed to avoid the $300 carpool lane ticket whilst passing.

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