Table 1.

Injury crashes, rates per 100 roadway kilometres (km) and demographic characteristics; Burlington and Camden Counties 2010–2018 (n = 693 municipality-years).

	Treatment (n = 18)			Control (n = 675)			t-test
	mean (SD)			mean (SD)
Injury crashes (count)
All times	225.2	12.0		87.5	5.2		<0.001
Morning (5am-12:59pm)	19.8	2.1		11.5	0.7		0.069
Afternoon (1pm-8:59pm)	79.5	3.5		29.5	1.7		<0.001
Night (9pm-4:59am)	123.6	7.1		46.1	2.8		<0.001
Injury crashes (per 100km)
All times	73.3	2.6		62.2	1.8		0.325
Morning (5am-12:59pm)	26.1	1.0		20.5	0.6		0.152
Afternoon (1pm-8:59pm)	40.8	1.6		33.3	1.0		0.232
Night (9pm-4:59am)	6.3	0.5		8.2	0.3		0.347
Demographic Characteristics
Population	37372.4	1972.9		11818.2	574.9		<0.001
Age (median)	42.0	0.4		40.2	0.2		0.107
Male (%)	48.2	0.2		49.2	0.2		0.406
Vehicle commuters (%)	87.4	0.7		88.1	0.2		0.537
Median household income ($)	87056.4	1510.2		72589.6	795.7		0.003
Hispanic (%)	3.7	0.2		9.1	0.3		0.008
Non-Hispanic White (%)	75.7	2.1		70.7	0.8		0.317
No-Hispanic Black (%)	6.8	0.5		13.9	0.6		0.044
Asian (%)	11.5	1.4		3.4	0.1		<0.001
Concentrated Disadvantage	142.6	1.0		150.1	0.9		0.162