Freeway Management*

	Data Year	% of Deployment
Freeway miles with real-time traffic data collection technologies	1997	16%
	1999	22%
	2000	24%
	2002	29%
	2004	35%
	2005	38%
	2006	38%
	2007	41%

	Data Year	% of Deployment
Ramps controlled by ramp meters	1997	N/A†
	1999	8%
	2000	9%
	2002	8%
	2004	9%
	2005	16%
	2006	16%
	2007	20%

	Data Year	% of Deployment
Miles controlled by lane control	1997	N/A†
	1999	5%
	2000	4%
	2002	6%
	2004	7%
	2005	9%
	2006	6%
	2007	6%

	Data Year	% of Deployment
Miles covered by Variable Message Signs	1997	N/A†
	1999	27%
	2000	27%
	2002	37%
	2004	41%
	2005	46%
	2006	48%
	2007	45%

	Data Year	% of Deployment
Miles covered by Highway Advisory Radio	1997	N/A†
	1999	15%
	2000	15%
	2002	22%
	2004	21%
	2005	22%
	2006	22%
	2007	19%

* Trend data is based on 78 large metropolitan areas surveyed in 1997, 1999, 2000, 2002, 2004, 2005, 2006 and 2007.

^†N/A = No data available for this survey year