Bureau of Transportation Statistics (BTS)
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Figure 3 - Typical Layout of Intersection Geometry

Figure 3 - Typical Layout of Intersection Geometry. If you are a user with disability and cannot view this image, use the table version. If you need further assistance, please call 800-853-1351 or email answers@bts.gov.

Key: LWm1, 2, 3, 4 = lane width on major road approaches;
LWn1, 2 = lane width on minor road approaches;
LNm1, 2 = number of lanes on major road approach;
LNn1 = number of lanes on minor road approach;
SHDW1, 2, 3, 4, 5, 6 = shoulder width on major- and minor-road approaches.