MDSHA has conducted a study on the east–west corridor between the MD 28–MD 97 intersection at Norbeck and the I-95–MD 198 interchange, a corridor that forms the most direct route from Laurel to Rockville. Plans for the MD 198 portion of the corridor call for expanding the route to a four-lane divided highway from MD 650 to US 29 and widening the highway to six lanes from the Montgomery–Prince George's County line to west of I-95. The proposals also include adding a center left-turn lane to MD 198 between Old Columbia Pike and the Columbia Pike intersection and constructing roundabouts at Good Hope Road, Thompson Road, and Peach Orchard Road in Spencerville. MDSHA has also conducted a study concerning MD 198 between the Baltimore–Washington Parkway and Fort Meade. Proposed improvements are associated with the Base Realignment and Closure process that has greatly increased activity at Fort Meade. The preferred alternative that came out of the study was to expand MD 198 from the Baltimore–Washington Parkway to MD 32 to a four-lane divided highway and to construct a flyover ramp from westbound MD 32 to westbound MD 198 to supplement the existing dumbbell interchange.