Portal:U.S. roads/Did you know/December 2011

...that the introduction of E-ZPass (pictured) has led to "significant improvements of infant health" among mothers giving birth that lived near toll plazas?
... that state highway K-143 near Salina, Kansas, uses three different types of pavement on its {{convert|4.6|mi}}?
...that the first modern roundabout on the Maryland highway system was constructed at the intersection of Maryland Route 94 and Maryland Route 144 in Lisbon in 1993?
...that comedian Robert Schimmel was killed in an accident on Loop 101 in Scottsdale, Arizona in 2010?
...that the Old Baltimore Pike was used by the French army during their march from Newport, Rhode Island to Yorktown during the Revolutionary War in 1781?