T

Degrees of freedom

Significant level

Mean Difference

Confidence interval 95%

Upper limit

Lower limit

Declaration of path geometry conditions (such as screws and slopes)

1.070

119

0.287

0.13333

−0.1135

0.3801

Diagnosis and prediction of air pollution

8.462

119

0.000

0.78333

0.6000

0.9666

Forecasting weather conditions

7.702

119

0.000

0.73333

0.5448

0.9219

Warning about exceeding the safe speed

9.132

119

0.000

0.68333

0.5352

0.8315

Providing safe speed selection information along the way

7.029

119

0.000

0.72500

0.5208

0.9292

Coordination with agencies responsible for emergency relief

9.867

119

0.000

0.75000

0.5995

0.9005

Controlling and monitoring suspicious vehicles

7.029

119

0.000

0.74167

0.5327

0.9506

Declaration of route blocking information due to maintenance or reconstruction

1.969

119

0.051

0.20833

−0.0011

0.4178

Alternative route Guide

3.455

119

0.001

0.35833

0.1530

0.5637

Inputs and outputs control of the route

14.989

119

0.000

1.03333

0.8968

1.1698

Law enforcement through collecting violation evidence

8.669

119

0.000

0.82500

0.6366

1.0134

Announcing route traffic and suggesting public transportation alternatives

13.382

119

0.000

0.93333

0.7952

1.0714

Announcing the exact departure time of public transportation alternatives

13.882

119

0.000

0.85833

0.7359

0.9808