This week's biggest headlines in transportation:

• CDC to extend mask mandate on public transport to April 18, develop new guidance
• High gas prices got you down? Some tips for newbie L.A. cyclists.
• Biden restores California’s power to set car emissions rules
• Clean California “beautification” grants include bike and pedestrian improvements
• Speed limits to be reduced on 177 miles of L.A. streets
• Purple Line subway project keeps rolling along
• Much-needed transit assistance announced
• California gas jumps 13 cents overnight. There’s no telling when prices will drop
• Heads up: bus shuttles replace trains on A and E Lines in DTLA this weekend for Regional Connector work