Alley Bumps
Alley bumps were developed specifically to address speeding and cut-through traffic in city alleyways. They slow cars to a stop. There is much community activity in an alley, ranging from bicycle traffic to garage sales, and even neighborhood get togethers. 
Made of 100% recycled rubber
Long lasting and cost efficient,  High visibility at night
Temporary or permanent installation
Channeled bottom for cabling and piping
Lowers insurance premiums for lot owners
Maintenance free,  Warranty: 3 years on the product
Measure 72" L x 20" W x 3" H or 48" x 20" x 3",