Research on the Relationship between Dynamic Message Sign Control Strategies and Driving Safety in Freeway Work Zones

Table 3

Vehicle operating characteristics with respect to the five strategies.

Indicator	Strategy 1	Strategy 2	Strategy 3	Strategy 4	Strategy 5
Mean of lane change location	102	250	305	298	358
SD of lane change location	8.48	7.95	6.52	9.15	7.49
Mean of speed (km/h)	77.175	82.356	75.054	76.012	80.125
SD of speed	0.981	0.802	0.072	1.575	1.055
Mean of acceleration (m/s^2)	-0.031	-0.021	-0.017	-0.064	-0.035
SD of acceleration	0.062	0.064	0.031	0.077	0.035
Mean of lateral placement (m)	0.016	0.051	0.035	0.054	0.010
SD of lateral placement	0.139	0.121	0.145	0.101	0.049