Table S3.

Percentage of peak hour vehicle-miles of travel (VMT) by PM peak hour level of service, 2008

	PM PEAK HOUR LEVELS OF SERVICE
Jurisdiction	Uncongested LOS A, B, or C†		Moderate Congestion LOS D‡		Severely Congested LOS E or F§		Total Peak Hour VMT		Total registered drivers	PM Peak VMT/Driver
Chesapeake	120,481	54.0%	58,275	26.1%	44,382	19.9%	223,138	100%	152,110	1.47
VA Beach	235,616	54.4%	102,253	23.6%	94,934	21.9%	432,803	100%	301,218	1.44

PM peak hour level of service is defined as 1500-1900 (per HRTPO, 9/9/2010).

^*Level of service (LOS) is a quality measure describing operational conditions within a traffic stream, generally in terms of such service measures as speed and travel time, freedom to maneuver, traffic interruptions, and comfort and convenience. ^a Levels of service are categorized as A-F with A being best and F the worst.

^†LOS A, B, and C are defined by industry standards as uncongested.

^‡LOS D is defined as moderate congestion.

^§LOS E and F are defined as severely congested.