Traffic Engineering
LOS, signals, roundabouts, parking demand, sight triangles, and traffic impact fee estimators.
Matches are ranked by relevance. Use CtrlK anytime to search the full site.
Bike Lane Design Calculator
Determine recommended bike lane type, width, and buffer from traffic speed, volume, and roadway conditions using NACTO and AASHTO guidelines.
Level of Service (LOS) Calculator
Determine roadway Level of Service grade (A through F) from traffic volume, lane count, free-flow speed, and vehicle mix using HCM methodology.
Parking Demand Calculator
Estimate required parking spaces from land use type and building size using ITE Parking Generation rates, with adjustments for shared parking and transit.
Pedestrian Signal Timing Calculator
Calculate walk and clearance intervals for pedestrian signal phases from crossing distance and walk speed per MUTCD and ADA standards.
Roundabout Capacity Calculator
Calculate entry capacity, volume-to-capacity ratio, delay, and level of service for single and multi-lane roundabouts using HCM methodology.
Sight Triangle Calculator
Calculate clear sight triangle dimensions for intersection safety based on AASHTO guidelines, design speed, and intersection control type.
Speed Hump Design Calculator
Design speed humps, speed tables, or speed cushions with recommended dimensions and spacing for target speed reduction on residential streets.
Traffic Impact Fee Calculator
Estimate development traffic impact fees from ITE trip generation rates, pass-by reductions, and fee schedules.
Traffic Signal Warrant Calculator
Evaluate MUTCD signal warrant criteria from traffic volume, accident history, pedestrian activity, and school zone presence to determine if a traffic signal is justified.
Turn Lane Length Calculator
Calculate deceleration, storage, and taper lengths for left and right turn lanes based on AASHTO design standards.