$-$What is the allowable maximum passenger speed if an inspector found

$2$ inch alignment defect $(62$ chord$)$ on tangent track

$1$ alignment defect $(62$ chord$)$ on curved track

$1$ Profile defect $(62$ chord$)$

$1(1)/(2)$ Profile defect $(62$ chord$)$

$1(1)/(2)$ cross$-$level defect

$-$Describe difference between construction, maintenance and safety standards. Give examples of each.

$-$Describe how a track geometry car measures track geometry