Report glass and other dangerous obstacles in roadway/bikeway
Follow the ABC Quick Check adapted from the League of American Bicyclists before starting your ride
A is for Air
* Check tire pressure. It is very common for tire pressure to be too low. Low tire pressure increases the chance of a flat (more tire touching the road), rim damage (tire pressure protects the rim from intrusions), and reduced cycling efficiency.
* Check for damage to the tire or cracks in the sidewalls
B is for Brakes.
* Check the brakes for pad wear and adjustment. If less than 1/8 of rubber shows at any place, replace the brake-block/pad assembly. Make sure the brake blocks are parallel to and aligned with the side of the rim when applied.
C is for Crank.
* Check the crank set and drive train. This is the whole assembly from the pedals, crank arms, bottom bracket, chainrings, chain and rear wheel. To check the cranks, take the left and right crank arms in your hands, then pull and push each, one at a time. They should feel secure in the bottom bracket
Quick is for Quick Releases.
* Quick-release hubs need to be tight, but not too tight. The proper pressure is obtained by pushing on the quick-release lever so it leaves an impression on the palm of your hand. The closed lever should face up and back to minimize the chance of catching on anything while you ride.
* Quick-release brakes, which are opened when removing or installing wheels, need to be in the closed position. Here is a good article on cycling in traffic. There will always be some who will argue fine points of safe cycling, but this covers the essentials.