Traffic & Parking Impact Studies

Whether to facilitate a project’s entitlement process, to assist with determining project feasibility, or to improve site access, Crain & Associates conducts traffic and parking analyses for a myriad of projects of differing land-uses sizes and mixtures.  We utilize analysis methodologies based on national standards and jurisdictional requirements.  We have prepared and received approval of traffic impact studies for projects throughout Southern California and beyond, employing the Highway Capacity Manual, the ICU methodology, gap and delay procedures, modeling software and simulations, and Vehicle Miles Traveled (VMT) calculations.  We also have extensive experience in evaluation and analysis of project parking demand and operations. We conduct code and shared parking analyses, parking inventories, parking utilization surveys, on-street parking surveys and local area parking surveys.  The comprehensive parking analyses we conduct allow agencies and our clients to clearly evaluate parking conditions and needs.

Transportation Modeling

With the passing of California State Bill 743, new traffic analysis requirements are being established by cities, counties and other agencies.   Vehicle Miles Traveled (VMT) is required in CEQA transportation impact analyses.  Crain & Associates has long used computerized transportation modelling techniques for evaluating transportation impacts, and provides feedback on VMT considerations.  We have refined computerized transportation models for our projects to provide specific VMT estimates for proposed land-uses and the specific location of a project.  With project specific transportation models we are able to consider transportation elements such as alternative mode availability, and how the project land-uses will interact with the other existing or anticipated land-uses in the project vicinity.  This analysis ability allows us to work with clients to refine proposed projects.

Site Access & Circulation Analyses & Design

The success of a project is based upon a well-planned site and Crain & Associates has considerable experience in providing valuable input into the site planning process.  We are called upon frequently to evaluate and modify access and circulation in order to enhance a site plan.  We provide transportation solutions that accommodate architectural features and challenging physical constraints.  We review slope and driveway width requirements, queuing capacity, loading dock access, vehicular turning maneuvers, and parking layouts in order to create optimum designs.  Our site plan design modifications also ensure pedestrian, bicycle and vehicular safety, accessibility and convenience.

Site Parking Layout Enhancement

Accessible and well-designed parking leads to cost efficiency for happy patrons and other users and cost efficiency. Crain & Associates frequently provides recommendations and design modifications to site planning teams in order to enhance the parking experience.  Whether it is angled, parallel, stacked or other parking configurations, we maximize parking spaces within the physical parameters available, without compromising safe and easy parking facility circulation.  We also provide operational recommendations to improve the efficient use of the site parking.

Traffic Signal Design

Our design staff prepares signal plan sets for jurisdictions throughout Southern California, including local City and County agencies, and Caltrans.  Whether a plan is for a new signal installation or for modifications to an existing signal, we are well versed in the equipment types and equipment location spacing, signal phasing, adaptive traffic signal control, specifications and notes, ADA ramp standards and other related requirements that allow for expeditious review of our plan sets.  From a single signal plan to multiple signal plans requiring processing in different jurisdictions, we provide exceptional design results.

Signing & Striping Design

Mobility Plans, Bicycle Master Plans, and General Plan updates call for modifications to street classifications, and lane and sidewalk width requirements.  Our understanding of the effects of these modifications on transportation facilities allows Crain & Associates to prepare comprehensive and complex striping plans for street segments, large and small.  We are very familiar with the CaMUTCD standards and consider the effects of roadway modifications on a range of transportation modes.  Our expertise coupled with our in depth knowledge of design standards and requirements serves as the foundation for our success in signing and striping plan set processing.

Street Lighting Design

Street lighting design involves coordination with various disciplines in order to address the landscape design, signal design and other potential roadway improvement designs.  Crain & Associates has developed an impressive reputation in working successfully with teams to provide illumination calculations and new and existing equipment locations that meet a project’s overall design goals.  We have developed complex and innovative street lighting plans which take into account use of non-standard luminaire mountings, including on pedestrian poles, on unique street lighting standards, and on building and tunnel structures.

Worksite Traffic Control Design

Crain & Associates is forefront in the preparation of traffic control plans to provide for vehicular and pedestrian safety during installation of utilities, construction of project site improvements and installation of off-site roadway improvements.  We assist teams in determining construction activity phasing in order to accommodate construction schedules as well as to meet City standards.  Our plan sets can include single or multiple street segments, single or multiple phases, short term, long term and demolition plans.  We also take into consideration pedestrian detouring when necessary.  All plans are consistent with the CaMUTCD (California Manual on Uniformed Traffic Control Design) and W.A.T.C.H. (Work Area Traffic Control Handbook) manual.

Complete Streets & Pedestrian/Bikeway Design

Crain & Associates prides itself on keeping current with traffic design strategies endorsed by the Federal Highway Administration, the Governor’s Office of Planning and Research, Caltrans headquarters, and local agencies, including those strategies related to Complete Streets and Vision Zero.  The focus of these strategies is to develop sound designs with all users in mind, including motorists, bicyclists, share vehicle patrons, transit users, and pedestrians. We participate in multidisciplinary teams, including with public agencies, to develop improvement plans for roadway segments, District Plans, and Master Plans in order to enhance bicycle and pedestrian safety and to allow for safe alternative modes of travel.  We have also provided route designs for bicycle Class 1 (bike path), Class 2 (bike lane) and Class 3 (bike route) design and evaluation.

Transportation Demand Management Plans

Trip reduction is a critical component in the traffic mitigation toolbox.  Crain & Associates works closely with clients and reviewing agencies to develop TDM program elements, monitoring provisions and program revision procedures that lead to project success.  We develop TDM programs to be consistent with building plans and project operations while meeting jurisdictional requirements.  Based on the SB 743 requirement to evaluate transportation impacts based on Vehicle Miles Traveled (VMT), trip generation and trip length reduction elements in TDM programs are increasingly important. We apply our vast experience with the development of functioning and effective programs for our clients.

Neighborhood Traffic Management Plans

Maintaining neighborhood quality of life is critical to sustainable and successful development.  Crain & Associates assists communities, local agencies and development teams, with developing transportation measures to maintain safety for all modes of travel as well as the character of a neighborhood.  We facilitate stakeholder involvement in the process of determining the optimal allocation of resources and determination of design elements, from concept through implementation.